Frank Nicholas Riley (July 3, 1887 – October 30, 1950) was an American athlete, and member of the Irish American Athletic Club. He was a member of the U.S. Olympic team in the 1908 Summer Olympics in London.
"He ran third in the 1,500 meter run at the Olympic try-outs held in Franklin Fielid, Philadelphia, but did not place in the finals in London. At the Metropolitan A.A.U. Junior championships Riley won the mile title and later in the year ran a slashing race in the 880 yard Canadian championship, taking second place and forcing Emilio Lunghi to break the record. Riley was a prominent member of the Thirteenth Regiment A.A. and competed successfully on their relay team."
- Cook, Theodore Andrea (May 1909). The Fourth Olympiad London 1908 Official Report (PDF). London: British Olympic Association. Retrieved 2008-12-29.
- De Wael, Herman (2001). "Athletics 1908". Herman's Full Olympians. Retrieved 30 July 2006.
- Greenberg, Stan (1987). Olympic Games: The Records. London: Guinness Books. ISBN 0-85112-896-3.
- Kieran, John (1977). The Story of the Olympic Games; 776 B.C. to 1976. Philadelphia and New York: J.B. Lippincott Company. ISBN 0-397-01168-7.
- Wudarski, Pawel (1999). "Wyniki Igrzysk Olimpijskich". Retrieved 30 July 2006. (Polish)