John Aloysius Morgan, AO RFD ED (9 October 1909 – 21 May 2008) was an Australian prelate of the Roman Catholic Church.

Morgan was born in Keilor on the outskirts of Melbourne, Victoria, where his father Patrick owned and operated a farm.

While at school he was considered a very good high jumper and champion handball player and retained a love of sport, and in particular, Australian rules football, throughout his life.

He was appointed on 29 May 1969 to the Roman Catholic Military Ordinariate of Australia where he would remain until of 2 January 1985, as well as the auxiliary bishop of the Canberra and Goulburn archdiocese.

As he had done with the soldiers in New Guinea, he retained strong pastoral feelings for his flock, the residents in the center where he lived, celebrating Mass daily and speaking with them whenever possible.