The 2003 Montana State Bobcats football team was an American football team that represented Montana State University in the Big Sky Conference during the 2003 NCAA Division I-AA football season. In their fourth season under head coach Mike Kramer, the Bobcats compiled a 7–6 record (5–2 against Big Sky opponents) and finished in a three-way tie for the Big Sky championship with Montana and Northern Arizona. Montana State lost to Northern Iowa in the first round of the NCAA Division I-AA Football Championship playoffs and ranked No. 21 in the final I-AA poll by The Sports Network.^[1]

Date	Opponent	Rank	Site	Result	Attendance	Source
August 30	at Wyoming*	No. 15	War Memorial Stadium Laramie, WY	L 10–21	17,407
September 6	Gardner–Webb*	No. 16	Bobcat Stadium Bozeman, MT	W 38–3
September 20	at No. 21 Cal Poly*	No. 11	Mustang Stadium San Luis Obispo, CA	L 21–24
September 27	Northern Colorado*	No. 20	Bobcat Stadium Bozeman, MT	L 10–14
October 4	at Saint Mary's*		Moraga, CA	W 40–0	1,525	[2]
October 11	No. 22 Idaho State		Bobcat Stadium Bozeman, MT	L 17–23
October 18	at Weber State		Stewart Stadium Ogden, UT	W 26–3
October 25	No. 10 Northern Arizona		Bobcat Stadium Bozeman, MT	W 21–17
November 1	Sacramento State		Bobcat Stadium Bozeman, MT	W 56–7
November 8	at Eastern Washington		Joe Albi Stadium Spokane, WA	L 25–34
November 15	at Portland State		Providence Park Portland, OR	W 25–14
November 22	No. 4 Montana		Bobcat Stadium Bozeman, MT (rivalry)	W 27–20
November 29	at No. 7 Northern Iowa*	No. 24	UNI-Dome Cedar Falls, IA (NCAA Division I-AA First Round)	L 14–35
*Non-conference game Homecoming Rankings from The Sports Network Poll released prior to the game