(Thomas?) Damett (?1389–1390 — between 15 July 1436 and 14 April 1437) was an English composer during the stylistic transitional from medieval to Renaissance music.
Nine works by him survive in the Old Hall Manuscript and may be autographs: six mass movements (including a Gloria-Credo pair based on a Square) and three motets (one isorhythmic).[1]
Ramsbotham, Alexander, ed. (1933–1938). The Old Hall Manuscript. Vol. 3 volumes. Completed by H.B. Collins and Dom Anselm Hughes. Buckinghamshire: Plainsong and Medieval Music Society.