Who's Who list by name, surname beginning with M

• Macfarlane, Robert Stetson (1899-1982) - President of Northern Pacific Railway 1951-1966 [preceded by Charles Eugene Denney; succeeded by Louis W. Menk]; director for Chicago, Burlington & Quincy Railroad; director for Colorado & Southern Railway.
• MacInnes, Miles (1830-1909) - Director for London & North Western Railway.
• Mackenzie, William (1849-1923) - Part owner of Toronto Street Railway, builder of Canadian Northern Railway predecessors. President of Canadian Northern Railway. President of Canadian Northern Ontario Railway. (Pocket List 1907, p 231)
• Mackey, Charles W. - President of Norfolk & Virginia Beach Railroad. (Official List 1888, p 141)
• Mackey, D. J. - President of Evansville & Terre Haute Railroad; president of Peoria, Decatur & Evansville Railroad. (Official List 1888, pp 79 and 155)
• Mackinnon, F. A. - General superintendent of Canadian Pacific Railway's Ontario Division. (Official List 1888, p 27)
• Macneill, John Benjamin (1793-1880) - Irish railway civil engineer who proposed many of the routes of the original railway lines in Ireland; he designed many of the original structures, including MacNeill's Egyptian Arch.
• Macrae, Charles C. - Chairman of London, Brighton & South Coast Railway 1920-__ [preceded by Edward Ponsonby].
• Magee, George J. - President of Fall Brook Coal Company's Railways. (Official List 1888, p 79)
• Magoun, George C. (1840-1893) - Chairman of the board for Atchison, Topeka & Santa Fe Railway.
• Mahone, William (1826-1895) - American civil engineer who built the Norfolk & Petersburg Railroad.
• Mallet, Anatole (1837-1917) - Inventor of the Mallet articulated steam locomotive type.
• Mallett, Charles Beatty (1816-1872) - President of the Western Railroad of North Carolina 1855-1865 and 1867-1868.
• Mallory, Francis (1807-1860) - Financier and a founder of the Norfolk & Petersburg Railroad.
• Mallory, S. H. - President and general manager of Fulton County Railroad; president of Fitzgerald & Mallory Construction Company, which built and operated other railroad lines in Iowa. (Poor's 1887, p 55; Official List 1888, p 85)
• Malmborg, Oscar (1820-1880) - Swedish-born U.S. immigration agent for Illinois Central Railroad 1853-1861.
• Manchester, George H. - President of St. Louis, Kansas City & Colorado Railroad. (Official List 1888, p 171)
• Manchester, George O. - President of California Southern Railroad. (Poor's 1887, p 23; Official List 1888, p 25)
• Mann, I. T. - President of Big Sandy, East Lynn & Guyan Railroad. (Pocket List 1907, p 219)
• Mansell, Richard C. (1813-1904) - Carriage superintendent and later works manager for South Eastern Railway (England); locomotive superintendent of SER 1877-1878 [preceded by Alfred Mellor Watkin; succeeded by James Stirling]; resumed as works manager for SER 1878-1882. During his time as carriage superintendent, he invented and patented (in 1848, 1862 and 1866) what has come to be known as the Mansell wheel - a railway wheelset that used a solid wood core instead of spokes on the wheels.
• Manson, David - Chairman of the Morayshire Railway 1851-1855 [preceded by Alexander Forteath; succeeded by James Grant].
• Manson, James (1845-1935) - Chief mechanical engineer for Great North of Scotland Railway 1883-1890 [preceded by William Cowan; succeeded by James Johnson]; Locomotive superintendent for Glasgow & South Western Railway 1890-1911 [preceded by Hugh Smellie; succeeded by Peter Drummond].
• Manvel, Allen (1837-1893) - President of Atchison, Topeka & Santa Fe Railway 1889-1893 [preceded by William B. Strong; succeeded by Joseph Reinhart].
• Manwiller, Michael - Chief mechanical officer for Heber Valley Railroad.
• Marble, J. M. C. - President of Cincinnati, Jackson & Mackinaw Railroad. (Poor's 1887, p 45; Official List 1888, p 53)
• Marble, John Hobart (1869-1913) - Assistant to Interstate Commerce Commission member Franklin Knight Lane 1906-1912, working his way up from Lane's clerk to be the attorney in charge of all commission prosecutions; appointed secretary to the Interstate Commerce Commision in 1912, becoming a full commissioner on March 10, 1913.
• Markham, Charles H. - President of Yazoo & Mississippi Valley Railroad; president of Blue Island Railroad; president of Illinois Central Railroad (IC) 1911-1918 [preceded by James T. Harahan; succeeded by Charles A. Peabody] and 1919-1926 [preceded by Charles A. Peabody; succeeded by Lawrence A. Downs]; president of Kensington & Eastern Railroad; president of St. Louis, Belleville & Southern Railway (subsidiary of IC); president of South Chicago Railroad (subsidiary of IC); president of Benton Southern Railway; president of Fredonia & Reeds Railroad; president of Herrin Northern Railroad; president of Johnson City Southern Railroad. (NY Times, May 22, 1918; Illinois PUC, 1915, pp 1199, 1218, 1222, 1237, 1239, 1300, 1308 and 1310-1)
• Marquis, M. S. - President of Newcastle & Butler Railroad. (Official List 1888, p 131)
• Marsh, Douglas Earle commonly known as D. E. Marsh or Earle Marsh (1862-1933) - Locomotive, Carriage and Wagon Superintendent for London, Brighton & South Coast Railway's Brighton Works 1904-1911 [preceded by R. J. Billinton; succeeded by L. B. Billinton as locomotive superintendent and Albert Panter as carriage and wagon superintendent].
• Marsh, Ernest S. (1903-1975) - President of Atchison, Topeka & Santa Fe Railroad 1957-1966.
• Marsh, R. O. - President of Tri-State Traction Company. (Illinois PUC 1915, p 1318)
• Marshall, R. D. - Receiver for Dayton, Fort Wayne & Chicago Railroad. (Official List 1888, p 63)
• Martin, James - Southern Division superintendent for Pullman Palace Car Company. (Poor's 1887, p x)
• Martin, John - Chairman of the United States Senate Committee on Railroads 1894-1895.
• Martin, R. W. - President of Batesville & Brinkley Railroad. (Poor's 1887, p 13; Official List 1888, p 13)
• Martin, W. S. - President of Arkansas & Memphis Railroad. (NY Times, May 22, 1918)
• Marvin, Robert N. - President of Chautauqua Lake Railroad. (Poor's 1887, p 31; Official List 1888, p 36)
• Marx, M. - President of Acme, Red River & Northern Railroad. (Pocket List 1907, p 187)
• Mason, E. R. - Receiver for Des Moines, Osceola & Southern Railroad. (Poor;s 1887, p 57)
• Mason, J. P. - President of Chicago, Waukegan & Fox Lake Traction Company; president of Woodstock & Sycamore Traction Company. (Illinois PUC, 1915, pp 1256 and 1276)
• Massey, William (1856-1925) - New Zealand Minister of Railways 1919-1922.
• Masten, N. K. - President of Maricopa & Phoenix Railroad. (Official List 1888, p 117)
• Mattoon, George B. - Chairman and president of Mattoon Railway. (Wisconsin Railroad Commission 1897, p 30)
• Maunsell, Richard (1868-1944) - Chief Mechanical Engineer for South Eastern and Chatham Railway 1913-1923 and Southern Railway in England 1923-1937.
• Maxwell, J. R. - President of Central Railroad of New Jersey. (Official List 1888, p 31)
• Mayer, Charles F. - President of Cumberland & Pennsylvania Railroad; president of Baltimore & Ohio Railroad 1888-1896 [preceded by Samuel Spencer; succeeded by John K. Cowen]. (Poor's 1887, p 51; Official List 1888, p 63)
• Maynard, Moses, Jr. - President of Long Island Rail Road 1851-1852 [preceded and succeeded by Isaac E. Haviland].
• Mayon, E. J. - President of the Order of Railway Telegraphers.
• William Gibbs McAdoo, 1914
  McAdoo, William Gibbs (1863-1941) - Worked to electrify the Knoxville Street Railroad, involved in the Battle of Depot Street over streetcar line construction; president of Hudson & Manhattan Railroad Co. where he oversaw completion in 1908 of trans-Hudson railway tunnels that were begun by Dewitt Clinton Hasin in the 1880s (tunnels that are still in use by PATH).
• McAlpine, John K. (1906-1984) - New Zealand Minister of Railways 1954-1957 and 1960-1966.
• McAlpine, William Jarvis (1812-1890) - Assistant engineer of Mohawk & Hudson Railroad 1830-1831; assistant engineer of St. Lawrence Improvement Co. in 1832; New York State Railroad Commissioner 1855-1857; chief engineer and assistant to the president of Erie Railroad; chief engineer and vice president of Galena & Chicago Union Railroad.
• McCabe, R. T. - President of Wilkes-Barre & Western Railroad. (Official List 1888, p 197)
• McCaffrey, J. B. - President of La Salle Terminal Railway. (Illinois PUC 1915, p 1312)
• McCallum, Daniel (1815-1878) - Appointed as general superintendent of New York & Erie Railroad in 1885; founded the McCallum Bridge Company in 1858; developed the McCallum inflexible truss used in wooden railroad bridges in the 19th century.
• McChesney, W. S. - President of East St. Louis Connecting Railway; president of St. Louis Transfer Railway; president of Terminal Railroad Association of St. Louis. (NY Times, May 22, 1918; Illinois PUC 1915, pp 1214 and 1242)
• McChesney, W. S., Jr. - President of East St. Louis & Carondelet Railway; president of Wiggins Ferry Company. (Illinois PUC 1915, p 1214 and 1246)
• McConkey, Charles R. - President of York & Peach Bottom Railroad. (Official List 1888, p 199)
• McConnell, James (1815-1883) - Locomotive superintendent for London & North Western Railway's Southern Division 1847-1862 [preceded by Edward Bury; position merged with the Northern Division in 1862; succeeded by John Ramsbottom]; designed a boiler that could burn coal smokelessly in 1852; oversaw design and construction of LNWR's Bloomer and Patent class locomotives.
• McCord, A. C. - President of Chicago & Calumet River Railroad. (Pocket List 1907, p 253)
• McCormack, Doyle (born 1943) - Railroad preservationist; president of Oregon Rail Heritage Foundation; helped restore SP 4449 to operating condition.
• McCracken, R. A. - President of Kankakee Electric Railway. (Illinois PUC 1915, p 1265)
• McCrea, James (1848-1913) - President of Indianapolis Union Railroad. President of Cumberland Valley Railroad. President of Pennsylvania Railroad 1907-1912 [preceded by Alexander Cassatt; succeeded by Samuel Rea]. (Official List 1888, p 99; Pocket List 1907, p 297)
• McCreery, William - President of Montour Railroad. (Official List 1888, p 127)
• McCullough, J. G. - President of Bennington & Rutland Railway; president of Panama Railroad. (Poor's 1887, p 17; Official List 1888, pp 15 and 151)
• McCune, J. M. - President of Columbus & Eastern Railroad. (Poor's 1887, p 49)
• McDaniel, John Robin - President of Virginia & Tennessee Railroad. (Lloyds 1859)
• McDoel, W. H. - President of Chicago, Indianapolis & Louisville Railway. (Pocket List 1907, p 269)
• McDonald, A. R. - President and managing director of Temiscouata Railroad. (Official List 1888, p 183)
• McDonald, Angus Daniel (1878-1941) - President of Southern Pacific Company [preceded by Paul Shoup; succeeded by Armand Mercier].
• McDonald, J. R. - President of Seattle, Lake Shore & Eastern Railroad. (Official List 1888, p 175)
• McDonald, M. A. - General manager of Cairo, Vincennes & Chicago Railroad. (Poor's 1887, p 23)
• 
  Morris McDonald in 1913
  McDonald, Morris (1865-1938) - President of Boston & Maine Railroad 1913-1914; president of Maine Central Railroad. (NY Times; May 22, 1918)
• McDonnell, A. - Chief Mechanical Engineer for North Eastern Railway 1882-1885.
• McDougall, John - President of Cumberland Railway & Coal Company. (Poor's 1887, p 51; Official List 1888, p 63)
• McDowell, L. D. - President of Artesia, Starkville & Grenada Railroad. (Poor's 1887, p 3)
• McEwen, Willard M. - President of Chicago & West Towns Railway; president of Chicago, Riverside & Lagrange Railroad; president of Suburban Railroad Compay. (Illinois PUC, 1915, pp 1252, 1255 and 1274)
• McFall, J. A. - President of Decatur, Sullivan & Mattoon Transit Company. (Illinois PUC, 1915, p 1305)
• McFarlane, Graham - Receiver for Breckenridge Company. (Official List 1888, p 19)
• McGonagle, W. A. - President of Duluth, Missabe & Northern Railway. (NY Times, May 22, 1918; Poor's 1917, p 175)
• McGowan, Hugh J. - Cofounder of the Ohio Electric Railway in 1907 with Randal Morgan and W. Kelsey Schoepf.
• McGuigan, Thomas M. (born 1921) - New Zealand Minister of Railways 1972-1974.
• McHenry, Edwin H. - Receiver for Northern Pacific Railroad [with Frank G. Bigelow]. (Wisconsin Railroad Commission 1897, p 33)
• McIlhon, C. W. - President of the Mineral Point & Northern Railway.
• McIntosh, Charles - Receiver and general manager for Denver Circle Railroad. (Poor's 1887, p 55)
• McIntosh, John F. (1846-1918) - Chief mechanical engineer for Caledonian Railway 1895-1914 [preceded by John Lambie; succeeded by William Pickersgill].
• McIntyre, J. C. - President of Dakota, Minnesota & Eastern Railroad. (Congressional Record 1986, p 24914)
• McIntyre, W. H. - President of San Antonio & Aransas Pass Railway. (NY Times; May 22, 1918)
• McIver, Bruce C. - President of Long Island Rail Road 1985-1989 [preceded by Robin H. H. Wilson; succeeded by Charles W. Hoppe].
• McKay, John - President of Bruce Mines & Algoma Railway Company. (Pocket List 1907, p 227)
• McKeen, William R. - President of Belt Railroad and Stock Yard of Indianapolis; president of Terre Haute & Indianapolis Railroad. (Poor's 1887, p 15; Official List 1888, p 185)
• McKenzie, William Innes - Builder of extensions to the Toronto, Grey & Bruce Railway in Canada.
• McKinley, William B. (1856-1926) - Founder and president of Illinois Railway & Light Company 1900-1904; continued as president after its reorganization as the Illinois Traction Company 1904-1922; president of Bloomington & Normal Railway & Light Company; president of Cairo & St. Louis Railway; president of Cairo Electric & Traction Company; president of Chicago, Harvard & Geneva Lake Railway; president of Chicago, Ottawa & Peoria Railway; president of Danville Street Railway & Light Company; president of Decatur Railway & Light Company; president of Bloomington, Decatur & Champaign Railroad; president of Danville & Eastern Illinois Railway; president of Danville & Northern Railroad; president of Danville & Southeastern Railway; president of Danville, Urbana & Champaign Railway; president of Illinois Central Traction Company; president of St. Louis Electric Bridge Company; president of St. Louis Electric Terminal Railway; president of St. Louis, Springfield & Peoria Railroad; president of Jacksonville Railway; president of Northern Illinois Light & Traction Company; president of Peoria Railway; president of Quincy Railway; president of Urbana & Champaign Railway, Gas & Electric Company; president of Illinois Western Railway; president of Peoria, Streator & Ottawa Railway. (Illinois PUC, 1915, p 1248-9, 1253-4, 1257, 1261-4, 1268-9, 1275, 1311 and 1315)
• McKinnon, Arnold B. - President of Norfolk Southern Railway and CEO of Norfolk Southern Corporation 1987-1992 [preceded as CEO by Robert B. Claytor; succeeded by David R. Goode]; Railroader of the Year for 1990 [preceded by W. Graham Claytor, Jr.; succeeded by Mike Walsh].
• McKissock, Thomas - Receiver and general manager for Council Bluffs & St. Louis Railway; receiver and general manager for Omaha & St. Louis Railroad. (Poor's 1887, p 51; Official List 1888, p 147)
• McLachlan, Colin (1924-1985) - New Zealand Minister of Railways 1975-1981.
• McLane, Louis (1786-1857) - President of Baltimore & Ohio Railroad 1836-1848 [preceded by Joseph W. Patterson; succeeded by Thomas Swann].
• McLaughlin, Richard - President of St. Johns, St. Augustine & Palatka Railroad. (Official List 1888, p 169)
• McMeen, S. G. - President of East St. Louis & Suburban Railway; president of East St. Louis Railway. (Illinois PUC 1915, p 1258)
• McMillan, James - President of Michigan Car Company; president of Duluth, South Shore & Atlantic Railroad; president of Detroit, Mackinac & Marquette Railroad. (Poor's 1887, pp 26 and 57; Official List 1888, p 73)
• McMillan, William - President of Missouri Car & Foundry Company. (Poor's 1887, p 30)
• McNair, E. O. - President of Dardanelle & Russelville Railroad. (Pocket List 1907, p 299)
• McNear, Denman - President of Southern Pacific Company 1976-1979 [preceded by Benjamin F. Biaggini; succeeded by Alan Furth].
• 
  George P. McNear, Jr., in 1938
  McNear, George P., Jr. - President of Toledo, Peoria & Western Railroad.
• McNeil, Gary - Managing director of GO Transit 1999-__ [preceded by Rick Ducharme].
• McNeill, Daniel - President of Mobile & Spring Hill Railroad. (Official List 1888, p 127)
• McNeill, E. - President of Shepaug, Litchfield & Northern Railroad. (Official List 1888, p 175-6)
• McNulta, John - President of San Francisco, Clear Lake & Humboldt Railroad; receiver for Wabash Railroad. (Official List 1888, pp 173-4 and 191)
• Mead, Varnum B. - President of Franklin & Megantic Railroad. (Official List 1888, p 83)
• Means, John - President of Ashland Coal & Iron Railway. (Poor's 1887, p 3; Official List 1888, p 5)
• Measures, Harry Bell (1862-1940) - Architect who designed the original station buildings for the Central London Railway, which opened in 1900.
• Meehan, J. P. - Western Division superintendent for Pullman Palace Car Company. (Poor's 1887, p x)
• Meiggs, Henry (1811-1877) - American promoter and con-man who worked to build the original railway lines in Peru and the line connecting Santiago and Valparaiso, Chile.
• Meily, L. M. - President of Texas, Santa Fe & Northern Railroad. (Official List 1888, p 186)
• Charles Sanger Mellen, 1914
  Mellen, Charles Sanger (1852-1927) - President of St. Johnsbury & Lake Champlain Railroad. President of Northern Pacific Railway 1897-1903 [preceded by Edwin W. Winter; succeeded by Howard Elliott]. President of New Haven Railroad 1903-1913 [succeeded by Howard Elliott]. President of Central New England Railway. President of Maine Central Railroad 1910-1914. (Official List 1888, p 19; Pocket List 1907, p 241; New York Times, September 3, 1913)
• Mellon, Thomas - President of Ligonier Valley Railroad. (Official List 1888, p 113)
• Melnikov, Pavel Petrovich (1804-1880) - Russian engineer and Transport Minister responsible for the selection of 5 ft gauge as the standard for Russian railways.
• Menk, Louis W. (1918-1999) - President of St. Louis - San Francisco Railway 1962-1966 [succeeded by Jack W. Gilliland]; president of Northern Pacific Railway 1966-1970 [preceded by Robert Stetson MacFarlane; succeeded by BN merger]; first president of Burlington Northern Railroad 1970-1971 [succeeded by Robert W. Downing].
• Mercier, Armand - President of Southern Pacific Company [preceded by Angus D. McDonald; succeeded by Donald J. Russell].
• Merriam, E. G. - President of Natchez & Southern Railroad. (NY Times, May 22, 1918)
• Merrick, George P. - President of North Shore & Western Railway. (Illinois PUC, 1915, p 1268)
• Messler, Thomas D. - President of Cincinnati & Muskingum Valley Railway; president of East St. Louis & Carondelet Railway. (Poor's 1887, pp 45 and 59; Official List 1888, pp 49, 51 and 75)
• Meyer, E. E. - President of Danville, Crescent & Kankakee Traction Company. (Illinois PUC, 1915, p 1305)
• Meyer, Jean Jacques (1804-1877) - French steam locomotive builder and designer of the Meyer articulation type.
• Michellon, James P. - President of Camden, Gloucester & Mount Ephraim Railway. (Poor's 1887, p 23)
• Milbank, Jeremiah (1818-1884) - Director for Chicago, Milwaukee & St. Paul Railway in 1876.
• Millar, John A. (1855-1915) - New Zealand Minister of Railways 1908-1912.
• Miller, C. - President and general manager of Bangor & Portland Railway. (Poor's 1887, p 13; Official List 1888, p 11)
• Miller, Charles - President of Cincinnati & Southeastern Railroad. (Poor's 1887, p 45; Official List 1888, p 51)
• Miller, Darius (1859-1914) - President of Chicago, Burlington & Quincy Railroad 1910-1914 [preceded by George Harris; succeeded by Hale Holden].
• Miller, Dennis H. - President of Iowa Interstate Railroad 2004-__.
  Miller, George Macculloch (1832-__) - President of Newport & Wickford Railroad & Steamboat Company 1871-__; director for New York, Providence & Boston Railroad 1873-__ then vice president of same; president of Providence & Stonington Steamship Company 1879-__; president of Denver, Utah & Pacific Railroad 1881-1887; president of Housatonic Railroad; director of New York, New Haven & Hartford Railroad. (Poor's 1887, p 57; Official List 1888, p 131; Cresseveur, 2014)
• Miller, H. I. - President of Chicago & Eastern Illinois Railroad 1906-__ [preceded by A. J. Davidson]. President of Evansville & Terre Haute Railroad 1906-__ [preceded by A. J. Davidson]. (New York Times, November 16, 1906; Pocket List 1907, p 253)
• Miller, H. W. - President of Kentucky & Indiana Terminal Railroad. (NY Times, May 22, 1918)
• Miller, Henry - President of Missouri & Illinois Bridge & Belt Railroad. (Illinois PUC, 1915, p 1228).
• Miller, Roswell - President of Chicago, Milwaukee & St. Paul Railway. Chairman of the board for CM&StP. (Wisconsin Railroad Commission 1897, p 15; Pocket List 1907, p 271)
• Miller, W. A. - President of Chicago & Northern Interurban Railway. (Illinois PUC, 1915, p 1302)
• Mills, D. O. - President of Virginia & Truckee Railroad. (Official List 1888, p 191)
• Mills, Edgar - President of Eureka & Palisade Railroad. (Official List 1888, p 79)
• Mills, Frederick  (1898-1949) - Chief mechanical engineer of Western Australian Government Railways 1940-1949.
• Mills, William - General manager of Morayshire Railway 1859-1861 [preceded by James Jenkins; succeeded by Alexander Watt].
• Milne, William - Locomotive superintendent for Natal Government Railways 1877-1896.
• Mineta, Norman (born 1931) - U.S. Secretary of Transportation 2001-2006 [preceded by Rodney Slater; succeeded by Mary Peters].
• Minton, A. B. - President of Murphysboro Electric Railway, Light, Heat & Power Company. (Illinois PUC, 1915, p 1267)
• Missenden, Eustace (1886-1973) - General manager of Southern Railway (UK) 1941-1947; chairman of the Railway Executive 1947-1951.
• Mitchell, Alexander (1817-1887) - President of Chicago, Milwaukee & St. Paul Railroad 1864-1887. (Poor's 1887, p 39)
• Mitchell, John H. (1835-1905) - Chairman of the United States Senate Committee on Railroads 1877-1879 and 1889-1891.
• Mitchell, R. M. - President of Augusta, Gibson & Sandersville Railroad. (Poor's 1887, p 9; Official List 1888, p 9)
• Mitchell, S. M. - President and general manager of Cassville & Western Railway. (Pocket List 1907, p 239)
• Moffat, David H. (1839-1911) - Colorado financier and head of nine railroads; namesake of Moffat Tunnel; president of Denver & Rio Grande Railroad. President of Denver, Northwestern & Pacific Railway. (Official List 1888, p 69; Pocket List 1907, p 307)
• Mohan, D. M. "Mike" - Final president of Southern Pacific Company 1984-1996 [preceded by Robert Krebs].
• Molson, John (1763-1836) - Founder of the Champlain & St. Lawrence Railroad, the first railroad in Canada.
• Mongeau, Claude - President of Canadian National Railway 2009-__ [preceded by E. Hunter Harrison].
• Monsarrat, N. - President and general manager of Cleveland, Akron & Columbus Railroad. (Poor's 1887, p 47; Official List 1888, p 57)
• Montague, Samuel S. (1830-1883) - Chief engineer for the Central Pacific Railroad.
• Montgomery, F. B. - President and general manager of Chicago West Pullman & Southern Railway. President of Deering Southwestern Railway. President of Illinois Northern Railway. (Pocket List 1907, pp 283 and 299; Illinois PUC, 1915, pp 1211 and 1219)
• Moohan, Michael (1899-1967) - New Zealand Minister of Railways 1957-1960.
• Moon, Richard - Chairman of the board of directors for London & North Western Railway 1861-1891.
• Mooney, S. L. - President of Bellaire, Zanesville & Cincinnati Railroad. (Official List 1888, p 13)
• Moore, G. F. - President of St. Louis & O'Fallon Railway. (Illinois PUC, 1915, p 1236)
• Moore, Margaret Landry (1923-2005) - "Miss Southern Belle" spokesmodel for Kansas City Southern's Southern Belle passenger trains.
• Moore, W. E. - Receiver for Dayton, Lebanon & Cincinnati Railroad. (Pocket List 1907, p 299)
• Moorman, Charles W. "Wick" (born 1953) - President of Norfolk Southern Railway 2004-2013 [preceded by David R. Goode; succeeded by James A. Squires]; chairman and CEO of Norfolk Southern Corporation 2005-__ [preceded by David R. Goode].
• Moorsom, Constantine Richard (1792-1861) - Director for the London & Birmingham Railway 1837-1839; Chairman of the Board for the Birmingham & Gloucester Railway 1841-1843; Chairman of the London & North Western Railway 1852-1861.
• Moorsom, William (1804-1863) - Chief engineer for the Cromford & High Peak Railway 1830-1832; chief engineer for the Birmingham & Gloucester Railway 1836-__ during which time he oversaw the construction of the Lickey Incline; consulting engineer in 1843 on a new line for the Königlich Preußische und Großherzoglich Hessische Staatseisenbahn in Prussia; consulting engineer in 1845 for the Waterford & Kilkenny Railway in Ireland; consulting engineer in 1847 for the Southampton & Dorchester Railway; consulting engineer in 1856 for a railway connecting Kandy and Colombo in Ceylon; consulting engineer in 1862 for the Ringwood, Christchurch & Bournemouth Railway.
• Morehead, J. T. - Receiver for Danville, Mocksville & Southwestern Railroad. (Poor's 1887, p 51)
• Morey, Edwin - President of Boston & Lowell Railroad. (Poor's 1887, p 17)
• Morgan, Charles Langbridge (1855-1940) - Chief engineer for London, Brighton & South Coast Railway 1896-__ [preceded by Frederick Banister]; Deputy Director of Railways for the British Army during World War I.
• Morgan, John Pierpont (1837-1913) - Usually known as J. P. Morgan; American financier who fought with Jay Gould and Jim Fisk for control of several eastern US railroads.
• Morgan, Randal - Cofounder of Ohio Electric Railway in 1907 with W. Kelsey Schoepf and Hugh J. McGowan,
• Morrill, Anson Peaslee (1803-1887) - President of Maine Central Railroad 1864-1866 and 1873-1875, then vice president of same 1875-1887.
• Morris, Howard - President of Oshkosh Transportation Company; receiver for Wisconsin Central Railroad [with Henry F. Whitcomb]. (Wisconsin Railroad Commission 1897, pp 35 and 41)
• Morris, Thomas A. (1811-1904) - Supervising engineer for the Madison & Indianapolis Railroad; president of the Bee Line and the Indianapolis & Cincinnati Railroad.
• Morris, William E. - President of Long Island Rail Road 1853-1862 [preceded by Isaac E. Haviland; succeeded by Coffin Colket].
• Morrison, Alex - President of Chatham Branch Railway. (Poor's 1887, p 31)
• Morrison, William Ralls (1824-1909) - Member of the Interstate Commerce Commission 1887-1892; Chairman of the ICC 1892-1897.
• Morrow, H. C. - President of Prairie State Traction Company. (Illinois PUC, 1915, p 1315)
• Morse, A. D. - President of Barre Railroad. (Pocket List 1907, p 215)
• Morse, Ephraim (1823-1906) - Organized the San Diego & Gila Railroad in 1879; worked to convince the California Southern Railroad to establish its coastal endpoint in San Diego.
• Mortimer, James D. - President of Chicago, Waukegan & North Shore Railway. (Illinois PUC, 1915, p 1304)
• Morton, Joy - President of Joliet & Eastern Traction Company. (Illinois PUC, 1915, p 1264)
• Morton, L. W. - President of Illinois Central Electric Railway. (Illinois PUC, 1915, p 1260)
• Mosher, E. G. - President of Augusta & Summerville Railroad. (Pocket List 1907, p 205)
• Moyers, Edward L. (1928-2006) - President of MidSouth Rail Corporation 1986-1989; president of Illinois Central Railroad 1990-1993 [preceded by Harry J. Bruce; succeeded by E. Hunter Harrison]; final chairman and CEO of Southern Pacific Company 1993-1995 [preceded by Benjamin F. Biaggini; SP merged into UP in 1996]; Railway Age's "Railroader of the Year" for 1995. (Congressional Record 1986, p 24914)
• Mudge, H. U. - Receiver for Chicago, Rock Island & Pacific Railroad; president of Morris Terminal Railway; president of Peoria & Bureau Valley Railroad; president of Denver & Rio Grande Railroad. (NY Times, May 22, 1918; Illinois PUC, 1915, pp 1210, 1229 and 1231)
• Mueller, William, Jr. - President of Blaney & Southern Railway. (Pocket List 1907, p 219)
• Mulliken, J. B. - General Manager of Detroit, Lansing & Northern Railroad; general manager of Saginaw Valley & St. Louis Railroad. (Official List 1888, p 73)
• Mulvane, Joab - President of Chicago, Kansas & Western Railroad. (Poor's 1887, p 7)
• Murdock, J. - President of Bare Rock Railroad. (Pocket List 1907, p 215)
• W. J. Murphy in 1904
  Murphy, W. J. - President and general manager of the Queen & Crescent System. (The Railroad Men, June 1904)
• Murphy, W. P. - President of Green Pond, Walterboro & Branchville Railroad. (Official List 1888, p 91)
• Murray, A. S., Jr. - Receiver for Dansville & Mount Morris Railroad. (Pocket List 1907, p 299)
• Oscar G. Murray in 1904
  Murray, Oscar G. - President of Baltimore & Ohio Railroad (B&O) 1904-1910 [preceded by Leonor F. Loree; succeeded by Daniel Willard]; chairman of the board of directors for B&O 1910-__. (Pocket List 1907, p 207)
• Myers, Arthur (1868-1926) - New Zealand Minister of Railways 1912.
• Myers, W. H. - President of Baltimore, Chesapeake & Atlantic Railroad. (NY Times; May 22, 1918)

Photo credits

• William Gibbs McAdoo - Official portrait by Harris & Ewing as U.S. Secretary of the Treasury. The Wikimedia Commons description page for this image (retrieved December 6, 2011) asserts that the image is in the public domain because it was published in the U.S. before 1923.
• Morris McDonald - Cropped from a scan of the original photo available on the Library of Congress website. This photograph was originally published in 1913 by the Bain News Service. The MARC record for this photograph (retrieved on November 22, 2013) asserts that there are "no known restrictions on publication." Due to the original publish date of 1913 in the United States, my understanding of copyright law is that this photograph is in the public domain.
• George P. McNear, Jr. - Cropped from a scan of the original photo available as part of the Harris & Ewing Collection on the Library of Congress website. The description page for this image asserts that there are "no known restrictions on publication," and the collection's rights description page (retrieved February 18, 2014) notes that the copyrights have expired on items in the collection.
• Charles Sanger Mellen - Cropped from a scan of the original photo (available on the Library of Congress website) originally published by Harms & Ewing Photographers in 1914; the rights and reproductions statement for this photograph (retrieved November 22, 2013) assergs that there are "no known restrictions on publications."
• W. J. Murphy - Cropped from a scan of the original image published in The Railroad Men, volume XVII, issue 9, June 1904 (scan available on Google Books). Since this was first published in the United States before 1923, my understanding is that this image is now in the public domain.
• Oscar G. Murray - Cropped from a scan of the original image published in The Railroad Men, volume XVII, issue 5, February 1904 (scan available on Google Books). Since this was first published in the United States before 1923, my understanding is that this image is now in the public domain.