A Trappist is a monk or nun of the Order of Cistercians of the Strict Observance.
Trappist may also refer to:
- TRAPPIST, Transiting Planets and Planetesimals Small Telescope
- TRAPPIST-1, star system found using TRAPPIST
- Products made at Trappist monasteries:
- Trappist Sign Language, monastic sign language used by Trappists