G
- Gabreski, Francis S. (1919–2002), LIRR 1978-1981.
- Gadsden, James (1788–1858), South Carolina Rail Road 1840-1850.
- Gallois, Louis, SNCF 1996-2006.
- Gamble, Patrick K. (born 1945), ARR 2001–present.
- Gardner, William E., WSOR 1988–present.
- Garrett, John W. (1820–1884), B&O 1858-.
- Gastler, Harold L., MKT 1975-1988.
- George, W. H. Krome (1918–2004), NS 1979–1990.
- Gibbons, William M., RI 1975-1984.
- Gibson, Gary, IHB -present.
- Giles, John, RailAmerica, FEC 2008–present.
- Gilliland, Jack E., AT&N, SLSF 1965-.
- Gilmore, Robert C., SOO 1986-1987.
- Gohlke, Reiner, DB 1982-1990.
- Goode, David R., NS.
- Goodenow, William, MEC 1862-1863.
- Goodfellow, Thomas M., LIRR 1955-1967.
- Gordon, Donald (1901–1969), CN 1950-1966.
- Gorman, James E. (died 1942), RI 1917-1942.
- Gorman, Paul, PC.
- Goto, Shinpei, South Manchuria Railway 1906-1908.
- Gould, George Jay, I (1864–1923), DRGW, WP, MP 1892-1915.
- Gould, Jay (1836–1892), Erie 1868-1872, UP 1870s-1883, New York City elevated railroads 1881-1888, MP 1879-1892.
- Gowen, Franklin B. (1836–1889), RDG 1866-1883.
- Granet, Guy, Sir (1867–1943), Midland Railway (UK) 1906-1922, LMS 1923-1927
- Grant, James (1812–1891), RI 1851-1854.
- Gray, Carl R. (1867–1939), GN 1912-1914, WM 1914-1919, UP 1920-1937.
- Green, Chris, Virgin 1999-2005, Network Rail 2005–present.
- Green, Fred J., CPR 2005–present.
- Greenough, Allen J., PRR 1960–1968.
- Grinstein, Gerald, BN 1985-1995.
- Grout, H. C., SOO 1944-1949.
- Gunn, David L. (born 1937), SEPTA 1979-1984, New York City MTA 1984-1990, WMATA 1991-1994, TTC 1995-1999, Amtrak 2002-2005.
- Gurley, Fred (1889–1976), ATSF 1944–1958.
Read more about this topic: List Of Railroad Executives