Harold Charles Ave (March 29, 1900 – August 9, 1986) was an American football and basketball coach. He served as the head football coach at Eureka College in 1938, at Eastern Illinois State Teachers College—now known as Eastern Illinois University—from 1939 to 1942, and at Western Illinois University in 1948, compiling a career college football record of 15–28–2. Ave was also the head basketball coach at Eureka from 1939 to 1942, tallying a mark of 35–25.