Lisa Maria Singh (born 20 February 1972) is a former Australian politician. She was a Senator for Tasmania from 2011 to 2019. She had previously been a member of the Tasmanian House of Assembly, representing the division of Denison from 2006 to 2010. The granddaughter of an Indo-Fijian member of the Parliament of Fiji, Singh was Australia's first female federal parliamentarian of Indian origin.