William John Conybeare (1 August 1815 – 23 July 1857) was an English vicar, essayist and novelist.
Conybeare was the son of Dean William Daniel Conybeare, and was educated at Westminster and at Trinity College, Cambridge, where he was elected fellow in 1837.
From 1842 to 1848 Conybeare was principal of the Liverpool Collegiate Institution (later Liverpool College), which he left for the vicarage of Axminster.
Conybeare published Essays, Ecclesiastical and Social (1855), and a novel, Perversion: or, the Causes and Consequences of Infidelity (1856), but is best known as the joint author (along with John Saul Howson) of The Life and Epistles of St Paul (1856).
Conybeare died at Weybridge, Surrey, in 1857, and is buried in Brompton Cemetery, London.