Robert John Debus (born 16 September 1943), a former Australian politician, has been a member of the Australian House of Representatives and the New South Wales Legislative Assembly, representing the Labor Party.
Debus has been a minister in both the Australian and New South Wales governments.
He served in the NSW Parliament from 1981 to 1988 and again from 1995 to 2007; and in the Australian Parliament from 2007 to 2010.
Before his retirement from the NSW Parliament, at the 2007 state election, he held the portfolios of Attorney-General, Minister for the Environment, and Minister for the Arts; and represented the Blue Mountains electorate.
Prior to his retirement from the Australian Parliament, at the 2010 federal election, he was Minister for Home Affairs in the Rudd Ministry; and served as Member for Macquarie.
Debus is a prominent member of Labor's Socialist Left faction.
On 6 June 2009, Bob Debus announced his resignation from the ministry and his retirement.