The World Billiards Championship is an international cue sports tournament in the discipline of English billiards, organised by World Billiards, a subsidiary of the World Professional Billiards and Snooker Association (WPBSA). In its various forms, and usually as a single competition, the title is one of the oldest sporting world championships, having been contested since 1870.

English billiards, called simply billiards in the United Kingdom and in many former British colonies, is a cue sport that combines the aspects of carom billiards and pool. Two cue balls and a red object ball are used. Each player or team uses a different cue ball. It is played on a billiards table with the same dimensions as one used for snooker and points are scored for cannons and pocketing the balls.