Robert Morton (also Mourton, Moriton; c. 1430 – after 13 March 1479) was an English composer of the early Renaissance, mostly active at the Burgundian court.
The long relatively peaceful period at the court under Philip the Good's reign ended with Philip's death in 1467, and under his successor Charles the Bold, the musical activities of the court were seriously disrupted; many of the singers and composers, including Hayne van Ghizeghem, took part in his many futile military campaigns.
Payment records for Morton end in 1476, and it was long assumed that he died then; however more recent evidence from the Vatican archive shows that he was alive as late as 1479, since he resigned a Dutch parish then.
One of the most famous of them is the earliest known setting of the tune l'homme armé, which was used by many early Renaissance composers as a cantus firmus for the Mass.
Another of his rondeaux, Le souvenir de vous me tue, was exceedingly famous, and copies of this piece were widely disseminated in Europe.