Mark Williams
- Born
- 21 March 1975 (51 years)
- Place of birth
- Cwm, Ebbw Vale, Monmouthshire, Wales
- Gender
- Male
Mark James Williams MBE (born 21 March 1975) is a Welsh professional snooker player who is a three-time World Champion, winning in 2000, 2003 and 2018. Often noted for his long potting ability, Williams has earned the nickname 'The Welsh Potting Machine', and is regarded as one of the greatest snooker players of all time.
