The 2023 Champion of Champions (officially the 2023 Cazoo Champion of Champions) was a professional snooker tournament that took between 13 and 19 November 2023 at the Toughsheet Community Stadium in Bolton, England. The 13th edition of the Champion of Champions since the tournament was first staged in 1978, it featured 16 participants, primarily winners of significant tournaments since the previous year's event.
As an invitational tournament, it carried no world ranking points. It immediately followed the 2023 International Championship which ended on 12 November. The winner received £150,000 from a total prize fund of £440,000.
Ronnie O'Sullivan was the defending champion, having defeated Judd Trump 10–6 in the previous final. However, O'Sullivan withdrew from the tournament, citing mental and physical health reasons, and was replaced by Ding Junhui in the draw.
Mark Allen won the event, defeating Trump 10–3 in the final.