Michael G. O'Brien (1933 – 14 November 2014) was an Irish Roman Catholic priest who was also a noted hurling coach and manager.
Over the next forty-five years he ministered in both Ireland and the United Kingdom, while also serving as a teacher at St Finbarr's College and chaplain to the Irish Navy.
Concurrently with his duties as a priest, O'Brien was heavily involved as a hurling coach at colleges, university, club and inter-county levels.
He entered St Patrick's College, Maynooth, and was ordained for the Diocese of Cork and Ross in the seminary chapel on 22 June 1958.
He then ministered in the Irish-emigrant areas of London until 1961, when he returned to his home diocese and a curacy in the parish of Blackrock, Cork, where he helped to rebuild St Michael's Church which had burnt to the ground.