The 1984 Cal Poly Mustangs football team represented California Polytechnic State University, San Luis Obispo as a member of the Western Football Conference (WFC) during the 1984 NCAA Division II football season.
Led by third-year head coach Jim Sanderson, Cal Poly compiled an overall record of 6–5 with a mark of 2–1 in conference play, placing second in the WFC.
The team outscored its opponents 197 to 90 for the season.
The Mustangs played home games at Mustang Stadium in San Luis Obispo, California.
[3][4] The following Cal Poly Mustang players were selected in the 1985 NFL draft.