| Earl Martineau | |
| Birth Date: | 30 August 1896 |
| Birth Place: | Minneapolis, Minnesota, U.S. |
| Death Place: | Menomonie, Wisconsin, U.S. |
| Player Years1: | 1921–1923 |
| Player Team1: | Minnesota |
| Player Positions: | Halfback |
| Coach Years1: | 1924–1928 |
| Coach Team1: | Western State |
| Coach Years2: | 1929–1930 |
| Coach Team2: | Purdue (backfield) |
| Coach Years3: | 1932–1937 |
| Coach Team3: | Princeton (backfield) |
| Coach Years4: | 1938–1945 |
| Coach Team4: | Michigan (assistant) |
| Overall Record: | 26–10–2 |
| Awards: |
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Earl Thomas Martineau (August 30, 1896 – January 20, 1966) was an American college football player and coach. He played halfback at the University of Minnesota and was selected as an All-American in 1922 and 1923 and served as the captain of the 1923 Minnesota team. While at the University of Minnesota, Martineau was a member of Sigma Chi fraternity.[1] After graduating from Minnesota, Martineau became a football coach. From 1924 to 1928, he was the head football coach at Western Michigan University, then known as Western State Normal School and Western State Teachers College, compiling a record of 26–10–2 in five seasons. His 1926 team tallied a record of 7–1. Martineau later served as a backfield coach for Purdue. In 1932, Martineau began a long association with Fritz Crisler. He was the backfield coach for Crisler at Princeton University from 1932 to 1937 and an assistant coach under Crisler at the University of Michigan from 1938 to 1945.
Martineau attended West High School in Minneapolis, Minnesota, from which he graduated in 1917. He enlisted with the United States Marine Corps and served overseas from 1917 to 1919.[2]
Martinau also competed in track and field for the University of Minnesota.[3]
Earl Martineau died of a heart attack in 1966.[4]