Frank Castleman, American football player, baseball player, and coach (b. 1877)
Frank Riley Castleman (March 17, 1877 – October 9, 1946) was an American football and baseball player, track athlete, and coach in multiple sports. He competed for the United States in the 200 metre hurdles at the 1904 Summer Olympics held in St. Louis, Missouri, where he won the silver medal. Castleman was a member of the Greater New York Irish American Athletic Association, which became the Irish American Athletic Club. He competed mainly in the 200 metre hurdles. Castleman graduated from Colgate University in 1906.Castleman served as the head football coach at the University of Colorado at Boulder in 1906 and 1907, compiling a record of 7–6–4. He was also the head basketball coach at Colorado in from 1906 to 1912, tallying a mark of 32–22, and the head baseball coach at the school from 1907 to 1913, amassing a record of 30–17. He was later the track coach at Ohio State University, where his team won the 1929 NCAA Men's Track and Field Championships.

Castleman died at his home in Columbus, Ohio on October 9, 1946 at the age of 69.