Michael Joseph "Iron Mike" Donahue (June 14, 1876 – December 11, 1960) was an American football player, coach of football, basketball, baseball, tennis, track, soccer, and golf, and a college athletics administrator. He served as the head football coach at Auburn University (1904–1906, 1908–1922), at Louisiana State University (1923–1927), and at Spring Hill College (1934).