Harold D. Cagle was an American football coach, athletics administrator, and educator. He was the first head football coach at Missouri Western College—now known as—Missouri Western State University in St. Joseph, Missouri, serving from 1970 to 1973. Cagle was the head football coach at Connors State Agricultural and Mechanical College—now known as Connors State College—in Warner, Oklahoma from 1965 to 1966. The Connors football program was disbanded after the 1966 season. In early 1967, he was hired as head football coach by Dodge City Community College in Dodge City, Kansas. However, by the spring of that year, he resigned due to health concerns, and was replaced by Jim Paramore.