Ronald Maurice Cahill is a former American football quarterback for the Chicago Cardinals. He was signed by the Cardinals as a replacement for Bud Schwenk, who had joined the armed forces. In his only National Football League season, Cahill lead the league in interceptions and did not win any of the ten games he played in. In 1946, Cahill signed with the Buffalo Bisons of the newly formed All-America Football Conference, but did appear in any games.