The 2005 New Mexico State Aggies football team represented New Mexico State University in the 2005 NCAA Division I-A football season. The Aggies were coached by head coach Hal Mumme and played their home games at Aggie Memorial Stadium in Las Cruces, New Mexico. They participated as members of the Western Athletic Conference.
The Aggies struggled as they transitioned from the run-heavy option offense used by previous head coach Tony Samuel to Mumme's pass-heavy air raid offense, finishing the season winless with a 0âÂÂ12 record and were outscored by opponents 198 to 465, with both the offense (109 of 119) and defense (116 of 119) finishing near last in NCAA Division I-A in points per game. Despite this, the Aggies were competitive in two games, losing by a point to Idaho in double-overtime and losing by three to Utah State.