The 2021 FIM Moto3 World Championship was a part of the 73rd F.I.M. Road Racing World Championship season. Pedro Acosta secured the 2021 championship with one race left in the season, which was marred by the death of Jason Dupasquier during the second qualifying session of the Italian Grand Prix.

Pedro Acosta Sánchez is a Spanish Grand Prix motorcycle racer, competing in MotoGP for the Red Bull GasGas Tech3 team. Acosta took his maiden win in only his second Moto3 race at the 2021 Doha motorcycle Grand Prix after starting from the pitlane for irresponsible riding in free practice. In the same season, he won the 2021 Moto3 World Championship becoming the first rookie champion since Loris Capirossi in 1990, and the second youngest ever champion, just one day older than Capirossi was at the time of winning. In 2023, Acosta won the Moto2 world championship with 2 races to go. Acosta is also a champion of the Red Bull MotoGP Rookies Cup, having won the title in 2020.