Liu Guoliang (simplified Chinese: ???; traditional Chinese: ???; pinyin: Liú Guóliáng; born January 10, 1976) is a retired Chinese table tennis player who has won all titles at major world tournaments including World Championships, World Cup and Olympic Games.
The second man to achieve a career grand slam of 3 majors (Olympic Gold, World Cup, World Championships).
He is considered by many to be one of the greatest players and coaches of all time.
He has also played with Kong Linghui in the doubles.