Harry Elbert "Cap" Trotter (October 18, 1890 – December 28, 1954)[1] was an American football, basketball, and track and field coach.

He was inducted into the Ventura County Sports Hall of Fame in 1989.

[2] UCLA began to play in the Southern California Intercollegiate Athletic Conference (SCIAC) in 1920, and competed against Occidental College, California Institute of Technology, University of Redlands, Whittier College, and Pomona College.

Coach Trotter's two wins were against Redlands and San Diego State University, which did not join the SCIAC until 1926.

This biographical article relating to a college football coach first appointed in the 1920s is a stub.