Submitted by Slambo on Mon, 01/04/2016 - 15:04
- Oakes, Thomas Fletcher (1843-1919) - President of Northern Pacific Railway 1888-1893. (Railway Age, 1887, p 236)
- Oberhelman, Doug - CEO of Caterpillar, Inc. 2010-present.
- O'Brien, J. P. - President of Northern Pacific Terminal Company of Oregon. (NY Times, May 22, 1918)
- O'Connor, M. J. - President of Louisville, New Albany & Corydon Railroad. (Official List 1888, p 115)
- Ogden, William Butler (1805-1877) - President of Chicago & North Western Railway.
- Ohliger, Lewis P. (1843-1923) - Trustee for the Wooster & Lodi Railway in Ohio.
- Olcott, W. J. - President of Duluth, Missabe & Northern Railway. (Pocket List 1907, p 311)
- Oliver, J. C. - President of Allegheny & South Side Railway. (Pocket List 1907, p 189)
- Olyphant, R. M. - President of Delaware & Hudson Canal Company. (Poor's 1887, p 53; Official List 1888, p 67; Pocket List 1907, p 301)
- Osborn, William H. (1820-1894) - Director of Illinois Central Railroad beginning in 1854; president of Illinois Central Railroad 1855-1865 [preceded by John N. A. Griswold; succeeded by John M. Douglas]; president of Chicago, St. Louis & New Orleans Railroad 1875-1882.
- Osgood, J. C. - Chairman of Colorado & South Eastern Railway. (Pocket List 1907, p 291)
- Ossoski, Sidney - President of Chicago & Oak Park Elevated Railroad. (Illinois PUC, 1915, p 1252)
- O'Toole, Tim - VP for Conrail 1987-1996; President and CEO of Conrail 1998-2001; Managing Director of London Underground 2002-2009; President of CRR Holdings 2008-__; CEO of FirstGroup 2010-__.
- Outram, Benjamin (1764-1805) - British civil engineer and pioneer in building tramways.
- Owen, John S. - President of Drummond & Southwestern Railroad. (Wisconsin Railroad Commission 1897, p 21)
- Owen, W. F. - President of Gulf, Mobile & Northern Railroad. (NY Times, May 22, 1918)