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–?). Donahue also coached basketball (1905–1921), baseball, track, and soccer (1912–?) at Auburn and baseball (1925–1926) and tennis (1946–1947) at LSU. He was inducted as a coach into the College Football Hall of Fame in 1951.