William Glenn Killinger (September 13, 1898 – July 25, 1988) was an American football, basketball, and baseball player, coach, and college athletics administrator from Harrisburg, Pennsylvania. He graduated Harrisburg Technical High School and then lettered in three sports at Pennsylvania State University, where he was an All-American in football in 1921. Killinger then played in the National Football League (NFL) for the Canton Bulldogs and the New York Giants and for Philadelphia Quakers of the first American Football League in 1926. Killinger served as the head football coach at Dickinson College (1922), Rensselaer Polytechnic Institute (1927–1931), Moravian College (1933), West Chester University (1934–1941, 1945–1959), and with the North Carolina Pre-Flight School (1944), compiling a