In snooker, a century break is a break of 100 points or more, compiled in one visit to the table. A century break requires potting at least 25 consecutive balls, and the ability to score centuries is regarded as a mark of the highest skill in snooker. Ronnie O'Sullivan has described a player's first century break as the "ultimate milestone for any snooker player".

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.