Joseph Cassidy (29 October 1933 – 31 January 2013) was Bishop of Clonfert from 1982 to 1987 and Archbishop of Tuam from 1987 to 1994.
He later transferred to the slightly larger Diocese of Clonfert, where he taught at, and later became President of, St. Joseph's College, Ballinasloe.
He was appointed Coadjutor Bishop of Clonfert diocese on 24 August 1979 and received episcopal ordination on 23 September 1979, one week before the historic visit of Pope John Paul II to Ireland.
On 1 May 1982, he succeeded to the position of Bishop of Clonfert and spent much time visiting the scattered small communities that make up much of the diocese.
[3] Following his death at home in Ballinasloe on 31 January 2013, his funeral was held in the Cathedral of the Assumption of the Blessed Virgin Mary, Tuam and he was buried at Moore, County Roscommon where he served after his retirement as Archbishop.