The 1975 Colorado State Rams football team was an American football team that represented Colorado State University in the Western Athletic Conference (WAC) during the 1975 NCAA Division I football season. In its second season under head coach Sark Arslanian, the team compiled a 6–5 record (4–2 against WAC opponents). Colorado State's senior quarterback, Mark Driscoll, passed for 1,246 yards and 4 touchdowns.

Date	Opponent	Site	Result	Attendance	Source
September 13	at No. 12 Texas*	Memorial Stadium Austin, TX	L 0–46	46,400	[1]
September 20	BYU	Hughes Stadium Fort Collins, CO	W 21–17	27,491	[2]
September 27	at New Mexico	University Stadium Albuquerque, NM	W 27–16	24,743	[3]
October 4	at Wyoming	War Memorial Stadium Laramie, WY (rivalry)	W 3–0	20,576	[4]
October 11	at Oregon State*	Parker Stadium Corvallis, OR	W 17–8	20,688	[5]
October 18	No. 11 Arizona State	Hughes Stadium Fort Collins, CO	L 3–33	28,191	[6]
October 25	Air Force*	Hughes Stadium Fort Collins, CO (rivalry)	W 47–10	20,058	[7]
November 1	at Tennessee*	Neyland Stadium Knoxville, TN	L 7–28	71,579	[8]
November 8	at UTEP	Sun Bowl El Paso, TX	W 21–17	11,150	[9]
November 15	No. 12 Arizona	Hughes Stadium Fort Collins, CO	L 9–31	19,887	[10]
November 22	Utah State	Hughes Stadium Fort Collins, CO	L 17–28	11,872	[11]
*Non-conference game Homecoming Rankings from AP Poll released prior to the game

^[12]