Juk or JUK may refer to:
- Juk, the Cantonese name for congee, or rice porridge
- Juk (food), Korean rice porridge
- Juk language, a Mon–Khmer language spoken in Laos
- JuK, software
- Ukkusissat Heliport (IATA: JUK), in Greenland
- Wapan language (ISO 639-3: juk), a Jukunoid language of Nigeria