The 2021 Championship League Invitational was a professional non-ranking snooker tournament, that took place from 4 January to 2 April 2021 in the Ballroom, Stadium MK in Milton Keynes, England.

On the first day of the tournament Stuart Bingham made the eighth career maximum break.

He accomplished the feat in the second frame of his Group 1 win over Thepchaiya Un-Nooh.

Kyren Wilson was the defending champion, having defeated Judd Trump 3–1 in the final of the ranking edition of the tournament.

[2] Wilson successfully defended the title, coming from 0–2 down in his last Winners group game, the semi-final and the final to win all three matches 3–2.

The Championship League event sees 25 professionals take part, with players earning prize money for every frame won.

Kyren Wilson defended his Championship League title, defeating Mark Williams 3–2 in the final.

Notes (a) Zhao Xintong withdrew from the tournament prior to group 4 play.