Ashley Klein (6 September 1979) is an Australian rugby league referee.
Klein arrived in England as a youngster and refereed his first few games in the Rugby League Conference travelling up from London.
His first professional game was Workington Town v Featherstone Rovers on 8 September 2002. His first Super League game was Huddersfield Giants v Wakefield Trinity Wildcats on 15 June 2003.
Klein was in charge of the 2008 Rugby League World Cup final in Australia. He quit Super League in 2009 to return to Australia for family reasons.
He is a former Parramatta Eels junior referee.
On 17 February 2012 Klein was the referee for the 2011 World Club Challenge match between the Super League Grand Final winners Leeds Rhinos and NRL Grand Final winners Manly Sea Eagles at the Headingley Carnegie Stadium in Leeds which saw the English side run out 26-12 winners in front of 21,062 loyal fans.
On 19 April 2013 he was the referee for the 2013 ANZAC Test.