The 2023 Cal Poly Mustangs football team represented California Polytechnic State University, San Luis Obispo as member of the Big Sky Conference during the 2023 NCAA Division I FCS football season. Led first-year head coach Paul Wulff, the Mustangs compiled an overall record of 3–8 with a mark of 1–7 in conference play, placing 11th in the Big Sky. Cal poly played home games at Mustang Stadium in San Luis Obispo, California. 
  Schedule
 | Date | Time | Opponent | Site | TV | Result | Attendance | 
|---|
| September 2 | 3:00 p.m. | San Diego* |  | ESPN+ | W 27–10 | 6,248 | 
 | September 9 | 1:00 p.m. | at San Jose State* |  | NBCSBA | L 3–59 | 14,224 | 
 | September 16 | 5:05 p.m. | Lincoln (CA)* | Mustang Memorial FieldSan Luis Obispo, CA
 | ESPN+ | W 41–20 | 9,238 | 
 | September 23 | 1:00 p.m. | at Portland State |  | ESPN+ | L 21–59 | 1,672 | 
 | September 30 | 5:05 p.m. | No. 21 UC Davis  |  | ESPN+ | L 13–31 | 8,744 | 
 | October 7 | 5:05 p.m. | at No. 3 Idaho | Mustang Memorial FieldSan Luis Obispo, CA
 | ESPN+ | L 14–42 | 6,028 | 
 | October 14 | 5:00 p.m. | at No. 2 Montana State |  | ESPN+ | L 19–59 | 21,997 | 
 | October 21 | 5:05 p.m. | Northern Colorado | Mustang Memorial FieldSan Luis Obispo, CA
 | ESPN+ | W 24–17 | 9,263 | 
 | November 4 | 1:00 p.m. | at Eastern Washington |  | ESPN+ | L 13–48 | 4,345 | 
 | November 11 | 2:00 p.m. | at No. 9 Sacramento State |  | ESPN+ | L 30–41 | 12,022 | 
 | November 18 | 5:05 p.m. | Weber State | Mustang Memorial FieldSan Luis Obispo, CA
 | ESPN+ | L 21–48 | 4,829 | 
 | *Non-conference game HomecomingRankings from STATS Poll released prior to the gameAll times are in Pacific time
 | 
 [1][2][3] 
 Preseason
 Polls
 On July 23, 2023, during the virtual Big Sky Kickoff, the Mustangs were predicted to finish eleventh in the Big Sky by both the coaches and media.[4] 
  Coaches poll    | Predicted finish | Team | Votes (1st place) | 
    | 1 | Montana State | 120 (10) | 
  | 2 | UC Davis | 96 (1) | 
  | 3 | Sacramento State | 94 (1) | 
  | 4 | Weber State | 91 | 
  | 5 | Idaho | 89 | 
  | 6 | Montana | 84 | 
  | 7 | Eastern Washington | 52 | 
  | 8 | Portland State | 45 | 
  | 9 | Northern Arizona | 44 | 
  | 10 | Northern Colorado | 37 | 
  | 11 | Cal Poly | 25 | 
  | 12 | Idaho State | 15 | 
  Media poll    | Predicted finish | Team | Votes (1st place) | 
    | 1 | Montana State | 447 (26) | 
  | 2 | Idaho | 410 (8) | 
  | 3 | Montana | 359 (2) | 
  | 4 | Sacramento State | 334 (3) | 
  | 5 | UC Davis | 330 | 
  | 6 | Weber State | 320 | 
  | 7 | Eastern Washington | 216 | 
  | 8 | Northern Arizona | 178 | 
  | 9 | Portland State | 167 | 
  | 10 | Northern Colorado | 109 | 
  | 11 | Cal Poly | 103 | 
  | 12 | Idaho State | 69 | 
 Preseason All–Big Sky team
 The Mustangs had one player selected to the preseason all-Big Sky team.[5] 
  Game summaries
 At San Jose State
     | Pregame line | Over/under | Win prob. | 
  | SJSU -23.5 | 60 | SJSU 88.4% | 
      | Game information | 
  | First QuarterSecond QuarterThird QuarterFourth Quarter
 | 
     | Statistics | CP | SJSU | 
  | First downs |  |  | 
  | Total yards |  |  | 
  | Rushing yards |  |  | 
  | Passing yards |  |  | 
  | Turnovers |  |  | 
  | Time of possession |  |  | 
 
   | Team | Category | Player | Statistics | 
  | Cal Poly | Passing |  |  | 
  | Rushing |  |  | 
  | Receiving |  |  | 
  | SJSU | Passing |  |  | 
  | Rushing |  |  | 
  | Receiving |  |  | 
  No. 3 Idaho
    No. 3 Idaho Vandals (4–1) at Cal Poly Mustangs (2–3) – Game summary
  at Mustang Memorial Field • San Luis Obispo, CA 
 - Date: October 7, 2023
- Game time: 5:00 p.m. PDT
- Game attendance: 6,028
- TV announcers (ESPN+): Chris Sylvester, John Kane
     At No. 9 Sacramento State
    Cal Poly Mustangs (3–6) at No. 9 Sacramento State Hornets (6–3) – Game summary
  at Hornet Stadium, Sacramento, CA 
 - Date: November 11, 2023
- Game time: 2:00 p.m. PST
- Game weather: 69 °F (21 °C) • NW 3 mph • Sunny
- Game attendance: 12,022
- Referee: Kelly Holman
- TV announcers (KMAX-TV/ESPN+): Play-by-Play: Jason Ross • Analysis: Darren Arbet
     | Game information | 
  |      | First Quarter
 (10:14) CP – Noah Serna 26-yard field goal (Drive: 8 plays, 64 yards, 4:43; Cal Poly 3–0)(7:55) SAC – Elijah Tau-Tolliver 34-yard run (Zach Schreiner kick) (Drive: 6 plays, 63 yards, 2:12; Sacramento State 7–3)(5:41) SAC – Devin Gandy 7-yard pass from Carson Conklin (Zach Schreiner kick) (Drive: 4 plays, 66 yards, 1:10; Sacramento State 14–3)(2:37) CP – Michael Briscoe 29-yard pass from Sam Huard (Noah Serna kick) (Drive: 7 plays, 75 yards, 3:04; Sacramento State 14–10)
 Second Quarter
 (8:27) CP – Noah Serna 44-yard field goal (Drive: 11 plays, 58 yards, 4:17; Sacramento State 14–13)(6:27) SAC – Marshel Martin 39-yard pass from Carson Conklin (Zach Schreiner kick) (Drive: 4 plays, 54 yards, 1:38; Sacramento State 21–13)(2:27) SAC – Carlos Hill 15-yard pass from Carson Conklin (Zach Schreiner kick) (Drive: 5 plays, 75 yards, 2:10; Sacramento State 28–13)(1:39) CP – Michael Briscoe 52-yard pass from Sam Huard (Noah Serna kick) (Drive: 4 plays, 80 yards, 0:42; Sacramento State 28–20)(0:18) CP – Noah Serna 23-yard field goal (Drive: 9 plays, 78 yards, 0:52; Sacramento State 28–23)(0:00) SAC – Zach Schreiner 32-yard field goal (Drive: 2 plays, 47 yards, 0:12; Sacramento State 31–23)
 Third Quarter
 (11:13) SAC – Elijah Tau-Tolliver 4-yard run (Zach Schreiner kick) (Drive: 1 play, 4 yards, 0:04; Sacramento State 38–23)(3:27) CP – Paul Holyfield Jr. 3-yard run (Noah Serna kick) (Drive: 8 plays, 69 yards, 4:04; Sacramento State 38–30)
 Fourth Quarter
 (12:28) SAC – Zach Schreiner 22-yard field goal (Drive: 10 plays, 70 yards, 5:54; Sacramento State 41–30)
 | Line
 Over/Under
    |  | 
     | Statistics | CP | SAC | 
  | First downs | 24 | 23 | 
  | Total yards | 539 | 538 | 
  | Rushing yards | 45 | 225 | 
  | Passing yards | 494 | 313 | 
  | Passing: Comp–Att–Int | 38–59–2 | 17–26–1 | 
  | Time of possession | 29:37 | 30:23 | 
 
   | Team | Category | Player | Statistics | 
  | Cal Poly | Passing | Sam Huard | 37/58, 483 yards, 2 TD, 2 INT | 
  | Rushing | Paul Holyfield Jr. | 7 carries, 27 yards, TD | 
  | Receiving | Michael Briscoe | 3 receptions, 124 yards, 2 TD | 
  | Sacramento State | Passing | Carson Conklin | 17/26, 313 yards, 3 TD, INT | 
  | Rushing | Marcus Fulcher | 20 carries, 121 yards | 
  | Receiving | Jared Gipson | 5 receptions, 154 yards | 
 
  Roster
  References
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| National championship seasons in bold |