Michael O'Connor (1810–1872) was a U.S. (Irish-born) Jesuit and Roman Catholic bishop. He served as the first Catholic Bishop of Pittsburgh, Pennsylvania between August 15, 1843 and May 23 1860, except for the time between April 29, 1853 and February 20, 1854, when he was appointed the first Catholic Bishop of Erie.
Michael O'Connor (born 06 October 1987, Belfast, Northern Ireland) is an Irish professional footballer who plays for Crewe Alexandra F.C.. O'Connor is a tough tackling, attacking midfielder.