Hammer
Hammer may refer to:
- Hammer (BattleMech), the 30-ton BattleMech
- Hammer (HMR-3M) (CCG - Mercenaries), the Mercenaries edition CCG card
- Hammer (Individual Leopard-class DropShip), Wolf's Dragoons DropShip
- Hammer (Lindon's Battalion), a MechWarrior from the MechWarrior 4: Mercenaries video game
- Hammer (system), the planetary system