Tanya Rachelle Gadiel, née Barber (born 21 November 1972), a former Australian politician, was a member of the New South Wales Legislative Assembly between 2003–2011, representing the electorate of Parramatta for the Labor Party. During her term in Parliament, Gadiel was Deputy Speaker of the New South Wales Legislative Assembly in the Kristina Keneally Labor Government. On 8 December 2010, Gadiel announced that she would not contest the 2011 state election.