1973 Baltimore Colts

The 1973 Baltimore Colts season was the 21st season for the team in the National Football League. The Baltimore Colts finished the National Football League's 1973 season with a record of 4 wins and 10 losses, and finished tied for fourth in the AFC East with the New York Jets. The Colts lost the tiebreaker to the New York based on head-to-head series (0–2).

The 1973 season was the first year since 1955 in which long-time quarterback Johnny Unitas was not on the roster.

Regular season
Before the 1973 season, the Colts traded their long-time quarterback, Johnny Unitas, to the San Diego Chargers. Unitas had been splitting quarterback duties with Earl Morrall and Marty Domres over the past few seasons. Unitas played one season for San Diego before retiring.