 | ATSF 2244-2299 | Atchison, Topeka and Santa Fe Railway | | | 0 |
| B&O GP9 | Baltimore and Ohio Railroad | | | 1 |
| BAP GP9 | Butte, Anaconda and Pacific Railway | | | 1 |
| BN GP9 | Burlington Northern | | | 9 |
| BNSF GP28-2P | BNSF Railway | | | 1 |
| BNSF GP28M | BNSF Railway | | | 2 |
| BRC GP9 | Belt Railway of Chicago | | | 1 |
| C&O GP9 | Chesapeake and Ohio Railway | | | 3 |
| CBRY GP9 | Copper Basin Railway | | | 1 |
| CNW GP9R | Chicago and North Western Transportation Company | | | 1 |
 | CP GP9 | Canadian Pacific Railway | | | 2 |
| CR GP9 | Conrail: Consolidated Rail Corporation | | | 1 |
| CWR GP9 | California Western Railroad (Skunk Train) | | | 1 |
| DRGW GP9 | Denver & Rio Grande Western Railroad | | | 2 |
| FGLK GP9 | Finger Lakes Railway | | | 1 |
| GLLX GP9 | Great Lakes Locomotive | | | 1 |
| IC GP9 | Illinois Central Railroad | | | 1 |
| IERR GP9 | Indiana Eastern Railroad | | | 1 |
| IMRL GP9 | I&M Rail Link | | | 1 |
| LCS GP9 | Leadville, Colorado and Southern Railroad | | | 1 |
| LDCX GP9 | Louis Dreifus Company | | | 2 |
| MERR GP9 | Maine Eastern Railroad | | | 1 |
| MILW GP9 | Chicago, Milwaukee, St. Paul and Pacific Railroad | | | 1 |
| MRL GP9 | Montana Rail Link | | | 1 |
| MSRC GP10 | MidSouth Rail Corporation | | | 2 |
| MSRC GP9 | MidSouth Rail Corporation | | | 1 |
| MWRX GP9 | Midwest Rail | | | 1 |
| NW GP9 | Norfolk and Western Railway | | | 4 |
| NYGL GP9 | New York & Greenwood Lake Railway | | | 1 |
| RCC GP9 | Ray-Carroll Co-Op | | | 1 |
| UP GP9 | Union Pacific Railroad | | | 3 |
| WCRL GP9 | West Chester Railway Lines | | | 1 |
| WFS GP9 | West Isle Line | | | 1 |
| WW GP9 | Winchester and Western Railroad | | | 2 |
