Stephen Maguire is a Scottish professional snooker player. He has won six major ranking tournaments, including the 2004 UK Championship, and has twice since reached the finals of that event. Maguire turned professional in 1998 after winning the IBSF World Snooker Championship. He was in the top 16 of the snooker world rankings for 11 consecutive years, from 2005 to 2016, twice reaching world no. 2. He is a prolific break-builder, having compiled over 500 century breaks, including three maximums.

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".