For the verb "to trek" see Trek.
The term may also refer to:
- The Great Trek, a 19th century migration of Africa's Boers
- Star Trek, an American science fiction entertainment franchise (1966-)
- Steam Trek: The Moving Picture (1994)
- Trek (band), Russian rock band
- TREK experiment, a particle physics experiment planned at J-PARC, Japan
- the Trek experiment, UC Berkeley, on board STS-74.
- Trek Bicycle Corporation, a bicycle manufacturer
- Trekking bike, a type of hybrid bicycle
- Saurkundi Pass Trek, a trekking program organized by the Youth Hostels Association of India
- Horse or pony trekking, a form of trail riding