The 2018 World Snooker Championship was a professional snooker tournament held from 21 April to 7 May 2018 at the Crucible Theatre in Sheffield, England. Hosted by the World Professional Billiards and Snooker Association, it was the 20th and final ranking event of the 2017–18 snooker season and the 42nd consecutive time the World Snooker Championship had been held at the venue. The tournament was broadcast by BBC Sport and Eurosport in Europe, and sponsored by betting company Betfred.

Snooker is a cue sport played on a rectangular billiards table covered with a green cloth called baize, with six pockets, one at each corner and one in the middle of each long side. First played by British Army officers stationed in India in the second half of the 19th century, the game is played with twenty-two balls, comprising a white cue ball, fifteen red balls, and six other balls—a yellow, green, brown, blue, pink, and black—collectively called the colours. Using a cue stick, the individual players or teams take turns to strike the cue ball to pot other balls in a predefined sequence, accumulating points for each successful pot and for each time the opposing player or team commits a foul. An individual frame of snooker is won by the player who has scored the most points. A snooker match ends when a player reaches a predetermined number of frames.