The 1998 Cal State Northridge Matadors football team represented California State University, Northridge as a member of the Big Sky Conference during the 1998 NCAA Division I-AA football season.
Led by Rob Phenicie in his first and only season as head coach, Cal State Northridge compiled an overall record of 7–4 with a mark of 5–3 in conference play, tying for second place in the Big Sky.
The Matadors played home games at North Campus Stadium in Northridge, California.
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