Barry Robert O'Farrell (born 24 May 1959) is a former Australian politician. He was 43rd Premier of New South Wales and Minister for Western Sydney. He was the Leader of the New South Wales Liberal Party from 2007 to 2014. On 16 April 2914, O'Farrell announced his resignation as Premier after giving misleading evidence to the Independent Commission Against Corruption. He resigned on 17 April 2014. Mike Baird was elected new NSW Liberal Leader and was sworn in as the new Premier of New South Wales on 23 April 2014.
On 24 November 2014, O'Farrell announced his intention not to stand for re-election at the 2015 NSW election and to retire from politics. The Liberal candidate Alister Henskens was elected to succeed O'Farrell.