The 2005 All-Pacific-10 Conference football team consists of American football players chosen by various organizations for All-Pacific-10 Conference teams for the 2005 college football season. The USC Trojans won the conference, posting an undefeated 8–0 conference record (though this was later vacated).. USC then lost to the Texas Longhorns in the Rose Bowl BCS National Championship Game 41 to 38. USC running back Reggie Bush was voted Pac-10 Offensive Player of the Year. Oregon defensive tackle Haloti Ngata and Arizona State linebacker Dale Robinson were voted Pat Tillman Pac-10 Co-Defensive Players of the Year.