Tom Williams (born 12 October 1983) is an English former rugby union player who played for Harlequins in the Aviva Premiership.

[4] Williams represented England in the 2003-04 World Sevens Series,[5] winning the Hong Kong leg.

[7] Williams started and scored a try for Harlequins in their 2011–12 Premiership final victory over Leicester Tigers.

He retired in 2015[2] moving into a coaching and mentoring role at Harlequins for four years before leaving professional rugby in 2019 to pursue a career in consultancy.

During the 2008–09 Heineken Cup quarter final against Leinster, Williams was told to fake a blood injury by Dean Richards to allow a tactical substitution to reintroduce Nick Evans leading to the bloodgate scandal.