Tom Williams or Tommy Williams may refer to:
Thomas Charles Williams (born February 7, 1951) was a Canadian ice hockey player.
Williams was chosen by the New York Rangers in the second round of the 1971 NHL Amateur Draft, 27th overall. He played for the Rangers from 1971–72 through early in the 1973–74 season, when he was traded to the Los Angeles Kings on November 30. His best season came in 1976–77 when he scored 35 goals along with 39 assists. He was traded to the St. Louis Blues following the 1978–79 season, but his only action following the trade was a short stint with the Salt Lake Golden Eagles in the CHL. He retired with career totals of 115 goals and 138 assists in 399 NHL games.
Tom Williams (born 12 October 1983 in Brighton, England) is a former English rugby union player who played for Harlequins in the Aviva Premiership. He normally played at either full-back or on the wing.
Williams represented Wales at U16 and U19 level, then switched to England for the 2002 IRB U19 World Cup.
Williams represented England in the 2003-04 World Sevens Series, winning the Hong Kong leg. He also competed in the 2006-07 IRB Sevens World Series.
During the 2008–09 Heineken Cup quarter final against Leinster, Williams faked a blood injury to allow a tactical substituition to reintroduce Nick Evans leading to the bloodgate scandal. He then insisted the club doctor, Dr Wendy Chapman, cut his lip to create a real injury to cover-up the cheat, which she then carried out. This resulted in a 12-month ban for the disgraced Williams, (reduced to four months on appeal), a three-year ban for former director of rugby and former policeman Dean Richards as well as a two-year ban for physiotherapist Steph Brennan from the ERC with a £260,000 fine for the club.