List of U.S. locomotive types
Steam classes
| Type or class | Whyte classification | Manufacturer |
|---|---|---|
| Four-coupled switcher | 0-4-0 | |
| Olomana | 0-4-2 | |
| Forney | 0-4-4 | |
| Six-coupled switcher | 0-6-0 | |
| Eight-coupled switcher | 0-8-0 | |
| Porter | 2-4-0 | |
| Columbia | 2-4-2 | |
| Mogul | 2-6-0 | |
| Prairie | 2-6-2 | |
| Adriatic | 2-6-4 | |
| Consolidation | 2-8-0 | |
| Mikado | 2-8-2 | |
| Berkshire | 2-8-4 | |
| Decapod | 2-10-0 | |
| Santa Fe | 2-10-2 | |
| Texas | 2-10-4 | |
| Mallet | 2-6-6-2 | |
| Norfolk & Western | 2-6-6-4 | |
| Allegheny | 2-6-6-6 | Lima |
| Y3 USRA | 2-8-8-2 | |
| Yellowstone | 2-8-8-4 | |
| ? | 2-10-10-2 | |
| American | 4-4-0 | |
| Atlantic | 4-4-2 | |
| Duplex | 4-4-4-4 | |
| Q1/Q2 | 4-4-6-4 | Altoona |
| Ten-Wheeler | 4-6-0 | |
| Pacific | 4-6-2 | |
| Hudson | 4-6-4 | |
| Mastodon | 4-8-0 | |
| Mountain | 4-8-2 | |
| Northern | 4-8-4 | |
| Southern Pacific | 4-10-2 | |
| Union Pacific | 4-12-2 | ALCO |
| U. P. Challenger | 4-6-6-4 | |
| Union Pacific Big Boy | 4-8-8-4 | ALCO |
| Pennsylvania | 6-4-4-6 | Altoona |
Diesel types
| Type or class | AAR wheel arrangement | Manufacturer | Country |
|---|---|---|---|
| E7 | A1A-A1A | EMD | USA |
| E8 | A1A-A1A | EMD | USA |
| E9 | A1A-A1A | EMD | USA |
| F3 | B-B | EMD | USA |
| F7 | B-B | EMD | USA |
| GP60 | B-B | EMD | USA |
| PA-1 | A1A-A1A | ALCO | USA |
| RS-1 | B-B | ALCO | USA |
| RS-2 | B-B | ALCO | USA |
| RS-2C | C-C | ALCO | USA |
| RS-12 | B-B | Baldwin-Lima-Hamilton | USA |
| 4-S | B-B | Ingalls Shipbuilding | USA |
| SD40-2 | C-C | EMD | USA |
| SD45 | C-C | EMD | USA |
| SD60 | C-C | EMD | USA |
| SD70 | C-C | EMD | USA |
| SD70M | C-C | EMD | USA |
| SD70I | C-C | EMD | USA |
| SD70MAC | C-C | EMD | USA |
| SD70ACe | C-C | EMD | USA |
| SD70M-2 | C-C | EMD | USA |
| SD80MAC | C-C | EMD | USA |
| SD90MAC | C-C | EMD | USA |