Matthew Ryan Mason-Cox is an Australian politician serving as President of the New South Wales Legislative Council since 4 May 2021. He is a member of the New South Wales Legislative Council for the Liberal Party since 28 September 2006, with a short two-week stint as an Independent in May 2021. Mason-Cox was the Minister for Fair Trading between May 2014 and April 2015 in the first Baird ministry (one of the shortest ministerial careers in NSW) and served as Leader of the Liberal Party of Australia in the Legislative Council during 2014 and 2015.