2005 Arizona Cardinals season

The 2005 Arizona Cardinals season was the team's 86th in the NFL. The team was unable to improve upon their previous season's output of 6-10, and failed to make the playoffs for the seventh consecutive season.

The October 2 game was the first regular season game to be played outside the United States, and was known as NFL Futbol Americano. The game was a Cardinals home game, and the Cardinals defeated their division rivals, the San Francisco 49ers, 31-14. The game was later considered part of the NFL International Series.