The All-America Football Conference (AAFC) was a short-lived professional league of American football which operated from 1946 to 1949.
The AAFC successfully competed against the National Football League in many cities, outdrawing the older league in terms of attendance and, in the case of teams such as the Cleveland Browns and San Francisco 49ers, demonstrating equal if not superior football talent. The Browns of 1948 in fact became the first professional football team to go undefeated in all its games - 24 years before the 1972 Miami Dolphins of the NFL would do so.
After operating for four years, the stronger franchises of the AAFC were merged into the National Football League (NFL). Those teams were:
- Cleveland Browns
- San Francisco 49ers
- Baltimore Colts - This Colts team played just one season (1950) in the NFL. The current Colts team started in 1953.
- Baltimore Colts, 1947-1949
- Brooklyn Dodgers, 1946-1948
- Buffalo Bisons, 1946, renamed Buffalo Bills, 1947-1949
- Chicago Rockets, 1946-1948, renamed Chicago Hornets, 1949
- Cleveland Browns, 1946-1949
- Los Angeles Dons, 1946-1949
- Miami Seahawks, 1946 (relocated to Baltimore)
- New York Yankees, 1946-1949
- San Francisco 49ers, 1946-1949