Thomas or Tom Riley may refer to: * Thomas Riley (Pennsylvania politician), former chairman of the Pennsylvania Convention Center Authority Board * Thomas J. Riley (1885–1928), American football player, coach and attorney * Thomas Joseph Riley (1900–1976), American prelate of the Roman Catholic Church * Thomas T. Riley (born 1949), U.S. Ambassador to Morocco * Thomas W. Riley (died 1872), U.S. politician * Thomas F. Riley (1912–1998), United States Marine Corps general * Thomas S. Riley (1852–1938), attorney general of West Virginia * Thomas Riley (Medal of Honor), United States Army soldier and recipient of the Medal of Honor * Tom Riley (actor) (born 1981), English actor * Tom Riley (footballer) (1882–1942), English footballer * Tom Riley (Iowa politician) (1929–2011), lawyer