As of my knowledge cutoff in September 2021, the racer who holds the record for the most Formula 1 Grand Prix wins is Lewis Hamilton. Hamilton, a British racing driver, has achieved a remarkable number of victories in his career. At that time, he had surpassed Michael Schumacher's previous record of 91 Grand Prix wins and continued to add to his tally, solidifying his place as one of the all-time greats in Formula 1.