Mazarrón is a municipality in the autonomous community and province of Murcia, southeastern Spain. The municipality has an area of 318.7 square kilometres (123.1 sq mi), and a population of 31,562 inhabitants in 2019. A military fort which was built between 1930 and 1936 during the reign of Alfonso XIII of Spain and the Second Spanish Republic exists as a tourist attraction on the old road between Mazarrón and Cartagena, and although it is accessible from the Bay of Mazarrón it is not in the municipality itself.

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.