2023–24 Peterborough United F.C. season

The 2023–24 season is the 90th season in the history of Peterborough United and their second consecutive season in League One. The club are participating in League One, the FA Cup, the EFL Cup, and the 2023–24 EFL Trophy.

In
† Signed for Under-21s

Pre-season and friendlies
On 26 May, The Posh confirmed their first pre-season friendly fixture, against Stamford. A second friendly was confirmed in early-June, against Colchester United. A day later, a third fixture, to honour Barry Fry was confirmed against Birmingham City. In early-July, a fourth fixture against Bedford Town was announced. On 20 July, Peterborough announced a further friendly, against Peterborough Sports.

Matches
On 22 June, the EFL League One fixtures were released.

Play-offs
Peterborough United finished fourth in the regular 2023–24 EFL League One season, so are drawn against fifth-placed Oxford United in the play-off semi-final. The first leg will take place at the Kassam Stadium and the second leg took place at the Weston Homes Stadium.

FA Cup
The Posh were drawn at home to Salford City in the first round, Doncaster Rovers in the second round and Leeds United in the third round.

EFL Cup
Peterborough were drawn against Swindon Town at home in the first round then away to Portsmouth in the second round and Mansfield Town in the third round.

EFL Trophy
In the group stage, Peterborough were drawn into Southern Group D alongside Cambridge United, Colchester United and Tottenham Hotspur U21. After topping the group, Peterborough United were drawn at home against Arsenal U21 in the second round and Crawley Town in the third round. They were then drawn at home to AFC Wimbledon in the Quarter Finals and away to Blackpool in the Semi Finals. Peterborough Beat Blackpool 3-0 and will face Wycombe Wanderers at Wembley Stadium. On 7 April 2024, Peterborough United won their second EFL Trophy beating Wycombe Wanderers 2–1 in the final.