Philip Ian Mounstephen (born 13 July 1959) is a British Anglican bishop and missionary; he has been the Bishop of Truro (the diocesan bishop of the Diocese of Truro) since November 2018.
From 2012, he was the executive leader of the Church Mission Society (CMS); he previously worked for Church Pastoral Aid Society (CPAS) and has served in parish ministry in the Diocese of Oxford, the Diocese of Southwark, and the Diocese in Europe.