The 2012 Humboldt State Lumberjacks football team represented Humboldt State University—now known as California State Polytechnic University, Humboldt—as a member of the Great Northwest Athletic Conference (GNAC) during the 2012 NCAA Division II football season. Led by fifth-year head coach Rob Smith, the Lumberjacks compiled an overall record of 7–4 with a mark of 6–4 in conference play, tying for second place in the GNAC. The team outscored opponents 341 to 270 for the season. Humboldt State played home games at the Redwood Bowl in Arcata, California.

Date	Opponent	Rank	Site	Result	Attendance
August 30	Colorado Mesa*	No. 21	Redwood Bowl Arcata, CA	W 38–19	4,198
September 8	Azusa Pacific	No. 17	Redwood Bowl Arcata, CA	W 42–17	5,360
September 15	Simon Fraser	No. 11	Redwood Bowl Arcata, CA	W 41–21	4,078
September 22	at Dixie State	No. 10	Hansen Stadium St. George, UT	W 49–13	3,883
September 29	at Central Washington	No. 9	Tomlinson Stadium Ellensburg, WA	L 3–31	3,470
October 6	Western Oregon	No. 24	Redwood Bowl Arcata, CA	L 14–42	3,469
October 13	at Azusa Pacific		Cougar Athletic Stadium Azusa, CA	W 24–20	2,264
October 20	Dixie State		Redwood Bowl Arcata, CA	W 57–18	6,978
October 27	Central Washington		Redwood Bowl Arcata, CA	W 14–10	4,996
November 3	at Simon Fraser		Terry Fox Field Burnaby, BC	L 37–41	304
November 10	at Western Oregon		McArthur Field Monmouth, OR	L 22–38	1,978
*Non-conference game Homecoming Rankings from AFCA Poll released prior to the game

^[1][2]