* Professional club appearances and points
counted for domestic first grade only.
** Representative team caps and points correct
as of 16:55, 20 Aug 2011 (UTC).
Martyn Elwyn Williams, MBE (born 1 September 1975) is a former Wales and British Lions international rugby union player. A flanker, he was Wales' most-capped forward with 100 caps until surpassed by Gethin Jenkins on 30 November 2013.
Williams played club rugby for Pontypridd, with whom he won the 1996-97 Welsh league, then moved to Cardiff RFC in 1999. He captained Cardiff from 2002 until 2005, when Rhys Williams took over the role.
In the Heineken Cup semi final against Leicester Tigers on 3 May 2009, Williams missed a crucial kick in the penalty shootout after the game had finished level after extra time, allowing Jordan Crane to step up and score the winning kick. It was the first time that a rugby union match had been decided in a shootout.
March 2012 Williams announced that he will retire at the end of the 2011/12 season
He won his 50th Welsh cap against England in the first match of the 2005 Six Nations Championship and played a prominent part in Wales' Grand Slam that year, notably scoring two tries early in the second half against France in Paris when Wales had appeared to be heading for defeat. He was named RBS Six Nations player of the Championship (2005).
Williams announced his retirement from international rugby on 1 October 2007, following Wales' early exit from the 2007 Rugby World Cup only to make a surprise decision to return to international action when he was recalled by new Wales head coach Warren Gatland in January 2008. He was a key member of Wales Grand Slam winning side of 2008, and was considered by many to be one of the best players in the tournament.
Williams currently holds the Welsh record for most appearances in the Five and Six Nations championships, surpassing Gareth Edwards' record of 45 appearances in the third round of the 2009 Six Nations. He attained his 100th cap against the Barbarians on 2 June 2012.