Sergey Klimov is a Russian grandmaster in chess. He was born on 12 April 1970 in Omsk, Russia. He is also a chess coach and chess writer. Klimov achieved the title of International Master in 1999 and Grandmaster in 2001.
Throughout his chess career, Klimov achieved significant successes. He won the U-12 section of the World Youth Chess Championship in Puerto Rico in 1982. He came first in the Russian U18 Championship in 1987. He won the Cento Open in Italy in 2000 and the Moscow Blitz Championship in 2004. Klimov has also won medals in team competitions such as the European Men's Team Chess Championship and Russian Team Championship.