The 1955 Michigan State Spartans football team represented Michigan State University in the 1955 college football season. In their third season in Big Ten play and their second season under head coach Duffy Daugherty, the Spartans compiled a 9–1 overall record (5–1 against Big Ten opponents) and were ranked No. 2 behind Oklahoma in the final AP Poll. In non-conference play, the Spartans also defeated Stanford, 38–14, and defeated UCLA, 17–14, in the 1956 Rose Bowl.