Milton Thaiday (born 15 February 1980) is an Australian former Torres Strait Islander rugby league player for the Newcastle Knights in the National Rugby League competition.
He is a cousin of Sam Thaiday of the Brisbane Broncos. In the 2005 season he scored 7 tries in 14 appearances.
Milton suffered a season-ending shoulder injury in round 5 and retired at the end of the 2007 season.
Thaiday played Super 14 Rugby for the New South Wales Waratahs, scoring a try when the Waratahs played the Pacific Islanders in June 2004.
He began his professional career in rugby union playing for the NSW Waratahs in Super 12 Rugby. He was discovered by rugby great Mark Ella while playing in a local competition at Lismore, northern NSW.