|Born||March 28, 1989|
Minsk, Belarusian SSR, Soviet Union
|FIDE rating||2572 (January 2020)|
|Peak ranking||2696 (September 2011)|
Sergei Zhigalko (Belarusian: Сяргей Жыгалка, Syarheĭ Zhyhalka; born March 28, 1989) is a Belarusian chess grandmaster and a three-time national champion. He was also European and world champion in his age category. Zhigalko competed in the FIDE World Cup in 2007, 2011, 2015 and 2017.
In 2007, he took part in the FIDE World Cup for the first time as one of the five FIDE President's nominees and was knocked out in the first round by Krishnan Sasikiran. In 2009, Zhigalko came second on tiebreaks in the World Junior Chess Championship to Maxime Vachier-Lagrave. He won the Belarusian Chess Championship in 2009, 2012 and 2013.
Sharing fifth place in the 2011 European Individual Chess Championship earned him a place in the World Cup held that year. He lost in the first round to Anton Filippov. Zhigalko won the Baku Open in 2011 and in 2012.
At the World Cup 2015 he reached the second round by defeating Ivan Bukavshin in round one and was eliminated by Veselin Topalov. In 2017 he lost in the first round to Yuriy Kuzubov. In the same year Zhigalko won the European Blitz Chess Championship in Katowice, Poland.
Zhigalko has played for the Belarusian national team at the Chess Olympiad, the World Team Chess Championship, the European Team Chess Championship and the Children Chess Olympiad. In the European Club Cup, he won the team bronze medal in 2010 playing for Ukrainian team A DAN DZO & PGMB of Chernigiv and an individual gold medal in 2013 playing board 3 for PGMB Rostov-on-Don.
His brother is chess grandmaster Andrey Zhigalko.
- GM title application (JPG). FIDE.
- "Interview with the World Junior Champion 2009". ChessBase. Retrieved 25 July 2015.
- "The Week in Chess 898". The Week In Chess. Mark Crowther. Retrieved 25 July 2015.
- "Championship BLR men 2013". FIDE. Retrieved 25 July 2015.
- "Sergei Zhigalko takes another trophy in Baku". Chessdom. Retrieved 30 September 2015.
- "Maksim Vavulin and Sergei Zhigalko winners of European Rapid & Blitz Chess Championships". Chessdom. 2017-12-18. Retrieved 2017-12-27.
- Crowther, Mark (2010-10-23). "European Club Cup 2010". The Week in Chess. Retrieved 2017-12-27.