The 1948 Oregon State Beavers football team represented Oregon State College in the Pacific Coast Conference (PCC) during the 1948 college football season. In their fourteenth season under head coach Lon Stiner, the Beavers compiled a 5–4–3 record (2–3–2 in PCC, sixth), defeated Hawaii in the Pineapple Bowl on New Year's Day, and outscored their opponents 249 to 236. The team played its home games on campus at Bell Field in Corvallis and at Multnomah Stadium in Portland.