The 1975 Cal State Fullerton Titans football team represented California State University, Fullerton as a member of the Pacific Coast Athletic Association (PCAA) during the 1975 NCAA Division I football season.
Led by first-year head coach Jim Colletto, Cal State Fullerton compiled an overall record 2–9 with a mark of 0–5 in conference play, placing last out of six teams in the PCAA.
The Titans played home games at Santa Ana Stadium in Santa Ana, California.
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