The 2023 FIM Moto2 World Championship is part of the 75th F.I.M. Road Racing World Championship season.
Teams and riders
All teams use series-specified Dunlop tyres and Triumph 765cc 3-cylinder engines.
Team changes
Forward Racing and MV Agusta ended their partnership which started in . Forward Racing entered the 2023 season using motorcycles under their own brand.
Rider changes
Dennis Foggia made his Moto2 debut with Italtrans Racing Team, replacing Lorenzo Dalla Porta. Cameron Beaubier returned to the AMA Superbike Championship after two years in Moto2. Rory Skinner replaced Beaubier at American Racing, to make his full-time Moto2 debut, having appeared as a wildcard rider for the team in . Skinner raced in the British Superbike Championship in 2022. Sergio García made his Moto2 debut with Pons Wegow Los40, replacing Jorge Navarro. Navarro then left Moto2 for the Supersport World Championship. Álex Escrig made his Moto2 debut with Forward Team, replacing Simone Corsi who became the rider coach for the team. Escrig raced in both the MotoE World Cup and Moto2 European Championship in 2022. Lorenzo Dalla Porta moved to Pertamina Mandalika SAG Team from Italtrans Racing Team, replacing the now-retired Gabriel Rodrigo. Albert Arenas moved to Red Bull KTM Ajo from GasGas Aspar Team, replacing Augusto Fernández who moved up to MotoGP. Moto3 World Riders' Champion Izan Guevara then moved up from Moto3 while remaining with GasGas Aspar Team, replacing Arenas. Kohta Nozane made his full-time debut with Correos Prepago Yamaha VR46 Master Camp, replacing Keminth Kubo. Nozane has raced before as a replacement rider in the Moto2 and MotoGP classes. Nozane raced in the Superbike World Championship in 2022. Darryn Binder and Lukas Tulovic raced for Liqui Moly Husqvarna Intact GP, replacing Jeremy Alcoba and Marcel Schrötter. Alcoba moved to QJmotor Gresini Moto2, replacing Alessandro Zaccone, while Schrötter left Moto2 for the Supersport World Championship. Binder made his Moto2 debut, having raced in MotoGP in 2022. Tulovic, who is the 2022 Moto2 European Champion, returned to the Moto2 class, having last raced in . Tulovic also raced as a replacement rider in MotoE in 2022. Borja Gómez made his full-time debut with Fantic Racing, replacing Niccolò Antonelli who was previously announced to race with the team in 2023, and was also included in the released provisional entry list. Gómez has served as a replacement rider in 2022.