Sakchai Sim Ngam (; born 12 July 1952) is a Thai former professional snooker player. He won the IBSF World Snooker Championship in 1995.
A former kickboxer, Sim Ngam won the 1984 ACBS Asian Snooker Championship with an 8âÂÂ5 defeat of Vichien Sangthong in the final. The following year, he reached the final again but lost 5âÂÂ8 to Gary Kwok.
Sim Ngam was accepted as a professional by the World Professional Billiards and Snooker Association (WPBSA) in 1985, becoming the first Thai professional player. His first professional match resulted in a 5âÂÂ2 win against David Greaves in the first qualifying round 1985 Matchroom Trophy, before he was defeated 4âÂÂ5 by Les Dodd in the following round. In his next tournament, the 1985 Grand Prix, he recorded 5âÂÂ3 wins over both Derek Mienie and Fred Davis to reach the third qualifying round, where he was eliminated 1âÂÂ5 by Eugene Hughes. He also reached the third qualifying round of the 1985 UK Championship, losing 4âÂÂ9 to Joe Johnson after defeating Roger Bales and Mick Fisher. He never progressed further in a professional tournament than he did in these events.
He was part of the Rest of the World Team for the 1986 World Cup that was eliminated after losing 0âÂÂ5 to Canada in their first match. Sim Ngam played one , which he lost 6âÂÂ102 to Bill Werbeniuk. In the qualifying rounds for the 1986 World Snooker Championship, Sim Ngam whitewashed Bernard Bennett 10âÂÂ0 before losing in the to Paul Medati, 9âÂÂ10.
Sim Ngam resigned his membership of WPBSA in 1987, when ranked 80th, and did not play in any professional events again until he was a wild card entrant to the 1995 Thailand Open, 1996 Thailand Open, and 1996 Asian Classic. His highest snooker world ranking was 80.
He won the amateur 1995 IBSF World Snooker Championship, defeating David Lilley 11âÂÂ7 after trailing 5âÂÂ7 at the end of the first day of the final. As defending champion at the 1996 IBSF World Snooker Championship, he was 2âÂÂ4 behind Stan Gorski in the last 16 round, but then equalised at 4âÂÂ4 after needing Gorski to concede points from two in the eighth frame. Gorski made a break of 51 in the deciding frame and won the match 5âÂÂ4.