The 1923 Quantico Marines Devil Dogs football team represented the Quantico Marine Base in the 1923 college football season. The team was led by third-year head coach John Beckett. In a 10-game schedule, the team went 7–2–1, with losses to VMI and Michigan. Between those two losses, the team had a six-game winning streak where they outscored opponents by an aggregate of 248–3. The season ended with a tie against Haskell and a 7–0 win over military rival Third Army Corps.

The 1923 college football season saw several teams finish their seasons unbeaten and untied. As such, numerous schools claim a national championship for the 1923 season. Illinois and Michigan, both members of what is now the Big Ten Conference, finished with records of 8–0 and were selected as national champion by multiple selectors. Illinois featured break-out star Red Grange. Ivy League teams Yale and Cornell also had undefeated seasons. Cornell was selected as national champion by one selector.