The 1958 Cal Aggies football team represented the College of Agriculture at Davis—now known as the University of California, Davis—as a member of the Far Western Conference (FWC) during the 1958 college football season. Led by first-year head coach Herb Schmalenberger, the Aggies compiled an overall record of 5–4 with a mark of 3–2 in conference play, tying for second place in the FWC. The team outscored its opponents 106 to 100 for the season. The Cal Aggies played home games at Aggie Field in Davis, California.
^The game against UC Santa Barbara was part of an "All-UC Doubleheader" that was held annually from 1948 to 1963. The other game of the double-header was California vs. UCLA. The games were always held at the home stadium of either Cal or UCLA.