Yuan Sijun (born 29 May 2000) is a Chinese professional snooker player.
Yuan started to play snooker at the age of 10 and played as a wildcard in many professional tournaments between ages of 13 and 16. Yuan first drew attention in 2016 when, at the age of 15, he defeated world number 13 Martin Gould in a 5–0 whitewash in the opening round of the 2016 China Open. Yuan's first match as a professional was a narrow loss to Oliver Lines in the 2017 Riga Masters qualifiers on 31 May 2017, two days after his 17th birthday.