Nigel Gregory Scullion (born 4 May 1956 in London, England) is an Australian politician. He has been a Country Liberal Party member of the Australian Senate for the Northern Territory since November 2001. He sits with the National Party in the Senate, and has been the Leader of the Nationals in the Senate since 2013; having previously served in that role between 2007 and 2008; and as Deputy Leader of the National Party between 2007 and 2013.