| ChS4 [1] | |
| Powertype: | Electric |
| Builder: | Škoda Works |
| Builddate: | 1963-1972 |
| Totalproduction: | 232 |
| Gauge: | |
| Wheeldiameter: | 1250mm |
| Length: | 19.98m (65.55feet) |
| Height: | 5240m (17,190feet) |
| Axleload: | 20.5t |
| Locoweight: | 123t |
| Electricsystem: | Catenary |
| Collectionmethod: | Pantograph |
| Maxspeed: | 160km/h |
| Poweroutput: | 5100kW |
| Operator: | РЖД (RZhD), БЧ (BCh), УЗ (UZ) |
| Locale: |  Russia Soviet Union  Belarus  Ukraine |
The ChS4 (Czech: ČS4, Russian: ЧС4) is an electric mainline AC passenger locomotive used in Russia, Belarus, and Ukraine.
To overcome some ChS4 shortcomings, in 1971 a modernized version of locomotive was released. It is known as ChS4T in USSR and as 62E in Czechoslovakia.