Mark Shield (born 2 September 1973 in Fortitude Valley, Queensland) is a former Australian Football referee and national Director of Referees.
He most recently refereed in Australia's A-League.
He first played soccer for the Innisfail Tigers at the age of six.
Not showing much promise as a player, he began refereeing at age 12, and by 16 was officiating adult matches in Townsville.
At age 28, he was selected to serve as a referee for the 2002 FIFA World Cup.
He was one of 23 referees selected to officiate the 2006 FIFA World Cup.[1] He lives in Fortitude Valley, Queensland.[2] Shield announced his retirement from refereeing on 20 September 2008 and he refereed his last game in Round 8 of the 2008/09 A-League season in the match between Queensland Roar and Adelaide United.