A ski is a long, flat device worn on the feet designed to help the wearer slide smoothly over snow.
Ski may also refer to:
- Skiing, gliding on skis
- Surf ski, a long kayak commonly used in open water
- Ski (driving stunt), driving a car balanced on two wheels
- Ski (record producer)
- Ski (drink), a soft drink
- Ski, Norway, a town and a municipality in Akershus county, Norway
- Ski Inn, a bar in Bombay Beach, California
- Water skiing, skiing on water, pulled by a boat
- Ski, a magazine published by Outside (company)
- Ski, a yogurt and fruit mousse brand owned by Nestlé
- -ski, a common ending of Polish surnames
The abbreviation SKI may refer to:
- Skipton railway station
- SKI combinator calculus, a technique used in functional programming
- SKI protein
- Spending the Kids' Inheritance (SKI, SKI'ing), see Consumption (economics)