The 1989 World Snooker Championship was a professional snooker tournament that took place from 15 April to 1 May 1989 at the Crucible Theatre in Sheffield, England. Organised by the World Professional Billiards and Snooker Association, it was the eighth and final ranking event of the 1988–89 snooker season and the thirteenth consecutive World Snooker Championship to be held at the Crucible, the first tournament at this location having taken place in 1977. There were 142 entrants to the competition.

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.