Donald Thomas Harwin (born 5 July 1964 in Sydney), an Australian politician, is the New South Wales Special Minister of State and the Minister for the Public Service and Employee Relations, Aboriginal Affairs, and the Arts in the second Berejiklian ministry since April 2019; the Vice-President of the Executive Council, and the Leader of the Government in the Legislative Council since January 2017 in the Berejiklian government.
Harwin is a member of the New South Wales Legislative Council representing the Liberal Party since 27 March 1999.Harwin has previously served as the Minister for the Arts, the Minister for Resources and the Minister for Energy and Utilities in the first Berejiklian ministry, from January 2017 until March 2019; and served as the twentieth President of the New South Wales Legislative Council between May 2011 and January 2017.