Colin Barnett, Australian economist and politician, 29th Premier of Western Australia
Colin James Barnett (born 15 July 1950) is a former Australian politician who was the 29th Premier of Western Australia. He concurrently served as the state's Treasurer at several points during his tenure and had previously held various other portfolios in Western Australia's Court–Cowan Ministry.

Barnett was born in Nedlands, Perth. He graduated from the University of Western Australia with an economics degree. Having lectured in economics at the Western Australian Institute of Technology and served as an executive director of the Western Australian Chamber of Commerce and Industry, he was elected to the Western Australian Legislative Assembly for the seat of Cottesloe at a by-election in 1990. Barnett served as a minister in the Court–Cowan Ministry from 1993 until its defeat at the 2001 election, after which he was made leader of the Liberal Party, replacing the outgoing premier, Richard Court. He resigned as leader after the unsuccessful 2005 election, but regained the position prior to the 2008 election, where he was elected premier. Barnett was sworn into office on 23 September 2008 by Ken Michael, the Governor of Western Australia at the time. At the 2013 election Barnett and his government were re-elected to a second term.

The Liberals were defeated at the 2017 election, and WA Labor's Mark McGowan succeeded Barnett as Premier. On 15 December 2017, Barnett announced his intention to resign from politics, which he did on 5 February 2018.