Robert John Renison (8 September 1875 – 6 October 1957) was an Irish-born Anglican bishop who worked in Canada.

[1] Renison was born in Cashel, County Tipperary into an ecclesiastical family on 8 September 1875[2] and educated at Trinity College School and the University of Toronto.

Ordained in 1896,[3] his first position was as a curate at the Church of the Messiah, Toronto,[4] after which he was a missionary at Fort Albany.

In 1931 he was elected Bishop of Athabasca but only held the post for a year.

From then until 1943 he was rector of St Paul's Toronto when he became the Bishop of Moosonee.