Archbishop Michael O’Gara (died 1748) was an Irish clergyman who served as the Roman Catholic Archbishop of Tuam from 1740 to 1748. He was appointed archbishop of the metropolitan see of Tuam by papal brief on 19th. September 1740, and received faculties as bishop later in the same month. He received dispensation to exercise all the archiepiscopal acts without the Pallium on 28 November 1741. He died in office in 1748.