John Gavin Nolan (March 15, 1924 – November 17, 1997) was a Roman Catholic bishop. Born in Mechanicville, New York, Nolan was ordained a priest on June 11, 1949. On December 12, 1987, Nolan was appointed titular bishop of Natchesium and auxiliary bishop of the Roman Catholic Archdiocese for the Military Services, USA and was ordained on January 6, 1988.