Earl C. "Billy" Hayes (November 21, 1884 – December 16, 1943) was an American football, basketball, and track and field coach.

[2][3] At Mississippi A&M, he was also as the head basketball coach from 1912 to 1924, tallying aa mark of 124–54.

Hayes was also the head football coach at Indiana from 1931 to 1933, compiling a record of 6–14–4.

Hayes died of pneumonia at age 59 on December 16, 1943, in Bloomington, Indiana.

This biographical article relating to a college football coach first appointed in the 1930s is a stub.