Anthony Otter (8 September 1896 – 9 March 1986) was an Anglican bishop who served as the sixth Bishop of Grantham (a suffragan bishop of the Diocese of Lincoln), from 1949 to 1965. Son of Robert and Marianne, Otter was educated at Repton and Trinity College, Cambridge (he gained his Bachelor of Arts {BA} in 1920 and proceeded Cambridge Master of Arts in 1925). After wartime service with the RNVR, he completed his degree and joined the Cambridge Mission to Delhi. Upon return, he trained for the ministry at Westcott House, Cambridge and was ordained a deacon by Arthur Winnington-Ingram, Bishop of London, at St Paul's Cathedral on 20 December 1925 and a priest by William Perrin, Bishop of Willesden, at St Saviour's Hampstead on 19 December 1926.