Zhuo Qun Song (Chinese: 宋卓群; pinyin: Sòng Zhuōqún; born 1997), also called Alex Song, is a Chinese-born Canadian who is currently the most highly decorated International Mathematical Olympiad (IMO) contestant, with five gold medals and one bronze medal.

[2][3] Song was interested in mathematics at a very young age where he started participating in competitions in first grade.

[3] In 2010, when Song was in the seventh grade, he represented Vincent Massey Secondary School in the Canadian Mathematical Olympiad where he finished first place.

[4] He would continue to represent Canada for 5 subsequent IMOs where he obtained a gold medal each time.

[2][3][6] In 2015, Song was also one of the twelve top scorers of the United States of America Mathematical Olympiad, representing Phillips Exeter Academy.