Brett Dallas (born 18 October 1974) is an Australian former rugby league footballer of the 1990s and 2000s. An Australian international and Queensland State of Origin representative winger, his club career included stints with both Canterbury and North Sydney in Australia's domestic competition, and the Wigan Warriors in Europe's Super League competition. He was notable for his great speed, winning the Sydney rugby league sprint in 1993.
Dallas began his career at the Canterbury-Bankstown Bulldogs in 1992, and was at the club until 1995 when he transferred to North Sydney. There he made 76 appearances, scoring 46 tries. He left North Sydney to join Wigan when the Bears merged with local rivals Manly-Warringah to form the short-lived Northern Eagles. Dallas made 10 appearances for Queensland in State of Origin (1993–1997). He made his international debut for Australia against New Zealand in 1995, scoring two tries. In total he made six Test appearances, including four matches in the World Cup (which Australia won) and has scored nine tries. His most recent Test appearance was in 1997.