John Louis Rothacher (November 1, 1886 – August 26, 1962) was an American college football player and coach. He served as the head football coach at Springfield College in Springfield, Massachusetts from 1924 to 1936, compiling a record of 66–29–12. Rothacher played football at Springfield from 1911 to 1913 as a guard before graduating in 1914. Rothacher died on August 26, 1962, in Alton, Illinois.