Trebor was a 14th-century composer of polyphonic chansons, active in Navarre and other southwest European courts c. 1380–1400.
He may be the same person also called Triboll, Trebol, and Borlet in other contemporaneous sources.
Some of his pieces explicitly reference historical events such as the Aragonese conquest of Sardinia in 1388-89 and the reign of Gaston Febus, the count of Foix.
His music was well known to Avignonese composers of the time, such as Grimace and F. Andrieu, who quoted some of his pieces in their works.
He is noted for his use of displacement syncopation and sustained chords, the former of which is one of the hallmark devices of ars subtilior.