| Derek Eastman | |
| Order: | Archdeacon of Buckingham |
| Term Start: | 1970 |
| Term End: | 1977 |
| Birth Date: | 22 January 1919 |
| Death Date: | 7 January 1991 |
| Spouse: | Judith Mary née Miller[1] |
Derek Ian Tennent Eastman (22 January 1919 - 7 January 1991) was a priest in the Church of England.
Eastman was educated at Winchester College, Christ Church, Oxford and Ripon College Cuddesdon.[2] After World War II service with the Coldstream Guards he was ordained in 1948. Following a curacy at Brighouse he was priest in charge of St Andrew's Caversham. He held incumbencies at Headington and Banbury and was the Archdeacon of Buckingham from 1970 to 1977.[3]