Gilbert Debenham (1432–1500) was Lord Chancellor of Ireland.
Gilbert Debenham may also refer to:
Gilbert Debenham (died 1417), MP for Suffolk; father of Gilbert Debenham (died 1481) Gilbert Debenham (died 1369), father of Gilbert Debenham (died 1417) Gilbert Debenham (died 1481), MP for Suffolk and Ipswich; father of Gilbert Debenham (1432–1500)