The 2021 WST Pro Series was a professional ranking snooker tournament, taking place from 18 January to 21 March 2021 at the Marshall Arena in Milton Keynes, England.

[1] Seven-time World Champion, Stephen Hendry, was due to make his return to the professional snooker tour, having initially retired in 2012.

[2] Gary Wilson made his third career maximum break in the second frame of his Group G match with Liam Highfield.

[3] Mark Williams won the only edition of the event, winning the 23rd ranking title of his career on his 46th birthday, becoming the third oldest ranking event winner behind Welsh compatriots Doug Mountjoy who was 46 in 1989 and Ray Reardon who was 50 in 1982.

All matches were played as best of three frames, and players were ranked, using the following criteria: The breakdown of prize money for the tournament is shown below.

[6] Aaron Hill was initially due to take part in Group B, but he withdrew and was replaced by Dean Young.

[10] Mark Allen was initially due to take part in Group F, but he withdrew and was replaced by Robbie McGuigan.

[11] Stephen Hendry was initially due to take part in Group G, but he withdrew and was replaced by John Astley.

[12] Yan Bingtao and Amine Amiri were initially due to take part in Group H, but they withdrew and were replaced by Hamim Hussain and Dylan Emery respectively.

Ali Carter and Mark Williams qualified for the Final Group Stage.

Kyren Wilson and Xiao Guodong qualified for the Final Group Stage.

Sam Craigie and Jack Lisowski qualified for the final Group stage.