Stephen Hilditch (born Whitehead, County Antrim on 6 June 1946) is a former Irish international rugby union referee from Northern Ireland who has refereed matches to World Cup level. He was a member of the Ireland International Referee Panel from 1984 until 1995, and has been an IRB international referee selector since 2003.
He was President of the Ulster Branch of the Irish Rugby Football Union (IRFU) for the 2003 / 2004 season. He joined the IRFU Committee in June 2004, and serves on the Finance Committee and Domestic Game Committee. Hilditch is also a member of various Sub-Committees, including Coaching (Chairperson), Schools, Youths, Laws Advisory, and Domestic Game Performance.
Hilditch worked as a physics teacher at Grosvenor Grammar School, then Vice Principal of Wallace High School, and finally Headmaster of Belfast High School before retiring in 2006.