| Honorific-Prefix: | The Rt Revd |
| Keith Arnold | |
| Honorific-Suffix: | MA(Cantab) |
| Bishop of Warwick | |
| Diocese: | Diocese of Coventry |
| Term: | 1980–1990 |
| Successor: | Clive Handford |
| Other Post: | Honorary assistant bishop in Oxford (1996–2021) Honorary assistant bishop in Newcastle (1991–1996) |
| Ordination: | 1952 (deacon); (priest) |
| Consecration: | 1980 |
| Birth Date: | 1 October 1926 |
| Religion: | Anglican |
| Parents: | Dr Frederick Holt and Alice Holt |
| Spouse: | Deborah Glenwright (m. 1955) |
| Children: | 2; 1 son, 1 daughter |
| Alma Mater: | Trinity College, Cambridge |
Keith Appleby Arnold (1 October 1926 – 17 January 2021) was an English Anglican clergyman who served as the inaugural Bishop of Warwick from 1980 to 1990.
He was educated at Winchester College[1] and Trinity College, Cambridge. After World War II service in the Coldstream Guards he was ordained in 1952 and began his ecclesiastical career with a curacy at Haltwhistle. From here he was successively Rector of St John's, Edinburgh,[2] Kirkby Lonsdale and Vicar of Hemel Hempstead before he ascended to the episcopate.
Arnold died in January 2021 at the age of 94.[3]