Vincent Keymer is a German chess grandmaster, born on 15 November 2004 in Mainz. He comes from a musical family and began learning chess from his parents at the age of five. He earned the grandmaster title in 2020, and his highest FIDE standard rating, 2776, was first reached on the December 2025 list.

At the age of 13 Keymer won the 2018 Grenke Chess Open with 8/9, and he finished second at the 2022 World Rapid Championship. In February 2025 he won the Freestyle Chess Grand Slam in Weissenhaus, defeating Magnus Carlsen in the semi-final and Fabiano Caruana in the final. In May 2026 he won the Super Chess Classic Romania, a Grand Chess Tour event.