Ian Winton Smith (born 25 November 1939) is a former Victoria, Australia Liberal Party of Australia politician. He represented the Electoral district of Warrnambool in the State of Victoria as a MLA from 1967 until 1983. He resigned to unsuccessfully contest Liberal Party pre-selection for the Federal Division of Wannon even though he would only been required to resign from State Parliament if he had been successful for that preselection for Federal Parliament. He later re-entered the Victorian Parliament as MLA for Electoral district of Polwarth from 1985 to 1999.
Smith was born at Terang, Victoria, Australia and educated at Terang Primary and Secondary Schools and Geelong Grammar School. He has a farming background, living at a family farm "Gwinganna" near Terang until his first marriage in 1967 when he purchased and moved to another farm "Jingella", near Camperdown. He sold that farm in 1988 and moved, living in both Lorne and Melbourne. He joined the Liberal Party in 1957 and remains a member. He has been married twice, first to Jennifer Louise Bartlam with whom he has two sons, Edward and James. His second marriage to Anne Michelle Renshaw produced two daughters, Victoria and Jacqueline. He later produced a son with Cheryl Harris.
His political career includes, Minister of Water Supply, 1970; Minister for Social Welfare which he established and reformed child care 1970-1973; Minister for Youth, Sport and Recreation which he established 1972-1973; Minister for Agriculture 1973- 1980 where he undertook many market reforms; Minister for Economic Development which he established, 1980–1981; Minister for State Development, Decentralization and Tourism 1980; Minister for Finance,1992-1995 where he undertook many reforms to privatize public sector assets, reduce the public sector workforce by 23% and reduce State debt and liabilities.