The 1938 Cal Aggies football team represented the Northern Branch of the College of Agriculture in the 1938 college football season. The team was known as either the Cal Aggies or California Aggies, and competed in the Far Western Conference (FWC). The Aggies were led by second-year head coach Vern Hickey. They played home games at A Street field on campus in Davis, California. The Aggies finished with a record of two wins six losses and one tie (2–6–1, 0–2–1 FWC). The Aggies were outscored by their opponents 58–174 for the 1938 season.