Chill may refer to:

• Chill (color)
• Chill (role-playing game)
• CHILL programming language
• Chill (radio station), a British digital radio station
• CHILL (library consortium), a consortium of health libraries in London
• Akhenaton (rapper), a French hip hop artist who uses Chill as one of his aliases
• Chill (computer game), a Snowboarding video game for PlayStation One released by Eidos
• Chill out (music), a style of electronic music
• Chill (foundry), an object placed in a mold to (locally) increase the solidification rate of a casting
• Rigor (medicine) that occur during high fevers as a result of immune response to disease
• The Chill, a bandit group of hobgoblins in the computer game of Baldur's Gate.

Chill may also refer to:

• Time spent idly relaxing with a close friend or group of friends
• The atmosphere and paralyzing effect created by actions or threats designed to silence opposition.