Trel may refer to:
Fat Trel (born 1990), American rapper Trel., taxonomic author abbreviation of William Trelease (1857–1945), American botanist and entomologist Polish term for an area in the forest where felled timber is located, from which the surname Trela is derived
See also La-Trel, abstract strategy board game designed by Richard Morgan Trelly, former commune in the Manche department in Normandy in north-western France Trell, a given name