Trey

Trey may refer to:

Places

 * Trey, Switzerland, a commune in Vaud, Switzerland
 * Trey Peaks, Coats Land, Antarctica

Other uses

 * Trey (playing card), the Three in card games
 * Trey (given name)
 * Trey, slang for a three-point shot in basketball
 * Student Union of Tampere University (TREY), in Finland