Stafford Hendricks "Pop" Cassell (February 8, 1909 – April 16, 1966) was an American college football and college basketball coach.

Cassell was the head football coach at American University in Washington, D.C. from 1940 to 1941 and at the Morningside College in Sioux City, Iowa in 1942.

He was buried in Arlington National Cemetery.

[2] In 1969, American University established the Stafford H. Cassell Hall of Fame in his honor.

This biographical article relating to a college football coach first appointed in the 1940s is a stub.