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

• Janney, Eli H. (1831-1912) - Inventor of the modern knuckle coupler.
• Jay, John (1805-1872) - British contractor and stonemason whose projects included the Stoke-on-Trent station, part of the Great Northern Railway at King's Cross station, King's Cross goods and passenger stations, London Underground's Metropolitan Line, Colchester station and much of Paddington station.
• Jayant, M. S. - General manager of the South Central Railway Zone in India.
• Jenks, Downing B. - President of Missouri Pacific Railroad. (Railway Age, July 13, 1970, p 60)
• Jewell, B. M. - President of the Railway Employees division of the American Federation of Labor.
• Johnson, J. - Chief Mechanical Engineer for Great North of Scotland Railway 1890-1894.
• Johnson, S. W. - Chief Mechanical Engineer for Great Eastern Railway 1866-1873.
• Johnston, Charles E. (1881-1951) - president of Kansas City Southern Railway 1928-1938.
• Jones, Charles - Chief Mechanical Engineer for Metropolitan Railway.
• Jones, Wm. A. - General Manager of Mineral Point & Northern Railway.
• Joyce, Patrick H. (1879-1946) - President of Chicago Great Western Railway 1931-1946.
• Judah, Theodore D. (1826-1863) - Chief engineer for Central Pacific Railroad and one of the earlier promoters of a transcontinental railroad across North America.