John Fitzmaurice Petty (born 9 March 1935) is a retired Anglican priest.
Petty was educated at Trinity Hall, Cambridge and Cuddesdon Theological College in Oxford and ordained in 1967 after an earlier military career with the Royal Engineers lasting 11 years. He was a curate at St Cuthbert's Sheffield and then St Helier, Morden. From 1975 to 1987 he was Vicar of St John's Ashton-under-Lyne when he became Provost of the Cathedral Church of St Michael, Coventry and was later appointed Dean of Coventry, a position he held until his retirement in 2000. Petty is now chaplain at Mount House Residential Home in Shrewsbury, a trustee of the Simeon Trust, and assists at St Chad's Church, Shrewsbury.
Petty married Susan Shakerley in 1962 and they have four children.