| Year: | 1923 |
| Team: | LSU Tigers |
| Sport: | football |
| Conference: | Southern Conference |
| Short Conf: | SoCon |
| Record: | 3–5–1 |
| Conf Record: | 0–3 |
| Head Coach: | Mike Donahue |
| Hc Year: | 1st |
| Captain: | E. L. "Tubby" Ewen |
| Stadium: | State Field |
The 1923 LSU Tigers football team represented Louisiana State University (LSU) as a member of the Southern Conference (SoCon) during the 1923 college football season. Led by first-year head coach Mike Donahue, the Tigers compiled an overall record of 3–5–1 with a mark of 0–3 in conference play. Doc Fenton and Moon Ducote were assistant coaches.