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
- -ski, a common ending of predominantly Polish surnames of Slavonic origin
- Ski (driving stunt), driving a car balanced on two wheels
- Ski (record producer)
- Ski (soda), a soft drink
- Ski, 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
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)