2005 Oklahoma State Cowboys football
Conference	Big 12 Conference
Division	South Division
Record	4–7 (1–7 Big 12)
Head coach	Mike Gundy (1st season)
Offensive coordinator	Larry Fedora (1st season)
Offensive scheme	Spread
Defensive coordinator	Vance Bedford (1st season)
Base defense	4–3
Home stadium	Boone Pickens Stadium
Seasons ← 2004 2006 →

The 2005 Oklahoma State Cowboys football team represented Oklahoma State University during the 2005 NCAA Division I-A football season. They participated as members of the Big 12 Conference in the South Division. They played their home games at Boone Pickens Stadium in Stillwater, Oklahoma. They were coached by head coach Mike Gundy.

Date	Time	Opponent	Site	TV	Result	Attendance
September 3	6:00 p.m.	No. 18 (I-AA) Montana State*	Boone Pickens Stadium Stillwater, OK		W 15–10	43,857
September 8	6:00 p.m.	at Florida Atlantic*	Dolphins Stadium Miami Gardens, FL	ESPN2	W 23–3	16,421
September 17	6:00 p.m.	Arkansas State*	Boone Pickens Stadium Stillwater, OK	FSSW	W 20–10	46,817
October 1	1:00 p.m.	Colorado	Boone Pickens Stadium Stillwater, OK		L 0–34	47,908
October 8	1:00 p.m.	Missouri	Boone Pickens Stadium Stillwater, OK		L 31–38	42,511
October 15	2:30 p.m.	at Texas A&M	Kyle Field College Station, TX		L 23–62	78,451
October 22	1:00 p.m.	at Iowa State	Jack Trice Stadium Ames, IA		L 10–37	43,964
October 29	6:00 p.m.	No. 2 Texas	Boone Pickens Stadium Stillwater, OK	TBS	L 28–47	48,035
November 12	1:00 p.m.	No. 13 Texas Tech	Boone Pickens Stadium Stillwater, OK		W 24–17	40,035
November 19	1:00 p.m.	at Baylor	Floyd Casey Stadium Waco, TX		L 34–44	28,753
November 26	2:30 p.m.	at Oklahoma	Gaylord Family Oklahoma Memorial Stadium Norman, OK (Bedlam Series)	ABC	L 14–42	84,875
*Non-conference game Homecoming Rankings from AP Poll released prior to the game All times are in Central time

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