Riser may refer to:
- Riser (casting), a reservoir in a manufacturing mold
- Stair riser, the vertical elements in a set of stairs
- Drilling riser, a device used on a ship or offshore drilling rig
- Neil Riser, a member of the Louisiana State Senate (United States)
- Riser card, a printed circuit board which extends connectors away from another board
- Early riser, a person who wakes up early in the day
- Parachute riser, strip of webbing joining the harness to the rigging lines
- Riser, a skateboard component which increases the space between the wheels and the deck
- Riser cable, a type of communications cable; contrast with plenum cable