Arm may refer to:
- Arm (left), a piece of the Skeletal Horror
- Arm (right), a piece of the Skeletal Horror
- Left arm, a piece of the wizard Clarence
- Right arm, a piece of the wizard Clarence
- My Arm, a troll
- Statue arm, a piece of a statue
- Black Arm Gang, a criminal organisation in Varrock
- Black arm, the arm of Katrina Raven
- Stone left arm, a piece of a statue
- Stone right arm, a piece of a statue
- Spare construct arm, a piece of a construct
- Spare construct arm (u), the uncharged version