The 1964 San Diego Chargers season was their fifth as a professional AFL franchise; the team failed to repeat as AFL champions after winning it in 1963 with a record of 11–3, and finished at 8–5–1. San Diego struggled at the start and finish of the season, but a six-game winning streak in the middle proved to be enough to win the AFL West, in a league where the two strongest teams were in the Eastern division.