List of largest locomotives List List

| name_ | railway | series | maker | dates | drive | wheel_arrangement | weight | power_ | notes_ |
|---|---|---|---|---|---|---|---|---|---|
| Re 6/6 | SBB, Switzerland | 11601-11689 | SLM, MFO/BBC/Sécheron | 1972, 1975–80 | electric | Bo-Bo-Bo | 120 t | 10,908 horsepower (8,134 kW) Tractive force: 398 kN (41 tons) | in operation (October 2012), revised classification Re 620, most powerful single-frame locomotive till China Railways HXD1B appeared |
| Re 4/4 | BLS, Switzerland | Re 425 161-Re 425 195) | SLM / BBC | 1964-83 | electric | (Bo)(Bo) | 80 t | 6,772 horsepower (5,050 kW) Tractive force 314 kN (32 tons) | in operation (October 2012) |
| Ae 8/8 | BLS, Switzerland | 271-275 | SLM / BBC | 1959-66 | electric | (Bo)(Bo)+(Bo)(Bo) | 160 t | 8,806 horsepower (6,567 kW), tractive force 471 kN (48 tons) | 1 preserved in working order |
| AD43C | Iranian Railways(RAI) | 2001-2100 | ALSTOM | 2001 | Diesel Electric | Co`Co` | 120 t | 4,300 horsepower (3,207 kW) | about 50 locomotives are stopped because of failures in the RK215 diesel engine |