The Hamilton Wildcats were a Canadian football team based in Hamilton, Ontario that played in the Ontario Rugby Football Union from 1941 to 1947, and in the Interprovincial Rugby Football Union from 1948 to 1949. The team was formed to play in the ORFU in 1941 to fill the void left by the Hamilton Tigers, who ceased operations that year due to a large number of players joining the army. In 1943 and 1944, the team assumed the name Hamilton Flying Wildcats to reflect the Royal Canadian Air Force personnel on the team. After struggling to compete on a sound financial level with the Hamilton Tigers, who resumed operations following World War II, the two clubs merged in 1950 to form the Hamilton Tiger-Cats.