Andrew Gerard Slack (born 24 September 1955 in Brisbane) is an Australian former state and national representative rugby union player who captained the Wallabies in 19 Test matches in between 1984 and 1987. His 133 appearances for Queensland between 1975 and 1987 stood as the state record until bettered by Mark Connors in 2006. He made 87 total appearances for Australia between 1978 and 1987, earning 39 Test caps. He scored 10 tries and captained Australia on 34 occasions in total. He was the tour captain for the Wallabies' 1984 tour Grand Slam feat.