| BVG Class HK | |
| Service: | 2001–present |
| Factory: | Hennigsdorf, Brandenburg, Germany |
| Yearconstruction: | 1999–2006 |
| Yearservice: | 2001 |
| Numberbuilt: | 24 |
| Formation: | 4 per train set DT–M–M–DT |
| Fleetnumbers: | 1001–1024 |
| Capacity: | 296 seated; 1,624 standing; 2 PIW spaces |
| Operator: | Berliner Verkehrsbetriebe |
| Lines: | U1 U2 & U3 |
| Carbody: | Aluminium-alloy double-skinned construction |
| Maxspeed: | 80km/h |
| Weight: | 226.8t /335.9 t (laden) |
| Acceleration: | 1.0 m/s2 |
| Deceleration: | 1.2 m/s2 (service) 1.3 m/s2 (emergency) |
| Poweroutput: | 2.24MW |
| Transmission: | WN Drive |
| Aux: | IGBT–VVVF Auxiliary Inverter with Battery Charger 80 kVA–16 kW |
| Collectionmethod: | Contact shoe |
| Electricsystem: | 750 V DC third rail |
| Brakes: | Regenerative Braking, Resistor Braking, Air Brakes |
The BVG Class HK is a type of electric multiple unit in service on the Berlin U-Bahn. It is operated by Berliner Verkehrsbetriebe (BVG) (Berlin Transport Company).
The HK is a Kleinprofil (small profile) variant of the larger Großprofil (large profile) H series.
The HK series primarily operates on the U2 line.