The 1964Baltimore Coltsseason was the 12th season for the team in the National Football League. The Colts finished the regular season with a record of 12 wins and 2 losses and finished first in the Western Conference. They clinched with three games remaining for the first title since 1959.
^ The game with the Cardinals in week 5 was scheduled to be played at St. Louis, but was shifted to Baltimore when the baseball Cardinals reached the World Series, preempting football use of Busch Stadium during the Series.
After Baltimore's 12–2 regular season, they traveled to Cleveland to take on the Browns for the NFL title. This was the third championship game appearance for the Colts since joining the NFL in 1953, and they entered the game as seven-point favorites. The first half was uneventful and scoreless, but the Browns scored 17 third quarter points in their 27–0 rout of the Colts.