John Horn Riley (June 13, 1909 – March 22, 1993) was an American football tackle.

Riley was born in Chicago and attended New Trier High School in Winnetka, Illinois, as well as St. John's Northwestern Military Academy in Delafield, Wisconsin.

[1] Riley attended and played college football at Northwestern University.

[1] He then won a silver medal in wrestling at the 1932 Summer Olympics, behind Swede Johan Richthoff and ahead of Austrian Nickolaus Hirschl.

[1] Riley entered the United States Marine Corps during World War II and rose to the rank of major.