Bishop Michael Portier (September 7, 1795, Montbrison, France – May 14, 1859, Mobile, Alabama) was a Roman Catholic bishop in the United States and the first Bishop of Mobile. He immigrated to the US in 1817, being ordained there. He later founded many parishes and Catholic institutions in Alabama and Florida, particularly in Mobile. Among them was Providence Hospital. He also recruited religious orders of men and women to teach and care for parishioners.