The 1984 Sacramento State Hornets football team represented California State University, Sacramento as a member of the Northern California Athletic Conference (NCAC) during the 1984 NCAA Division II football season. Led by seventh-year head coach Bob Mattos, Sacramento State compiled an overall record of 6–5 with a mark of 5–1 in conference play, placing second in the NCAC. The team outscored its opponents 277 to 218 for the season.