Mark Victor Arbib (born 9 November 1971) is a former Australian politician and trade unionist, who was an Australian Labor Party member of the Australian Senate from 1 July 2008 to 5 March 2012, representing the state of New South Wales.
He was the ALP State Secretary of the New South Wales branch from 2004-07.
In February 2009, he was appointed Parliamentary Secretary for Government Service Delivery, a position within the Prime Minister and Cabinet portfolio.
He later served as Minister for Indigenous Employment and Economic Development, Minister for Sport and Minister for Social Housing and Homelessness.
After former prime minister Kevin Rudd failed in a leadership challenge to Prime Minister Julia Gillard in February 2012, Arbib resigned from the ministry on 2 March, and from the Senate on 5 March.
Arbib is currently a senior executive with James Packer's private investment company, Consolidated Press Holdings.
He is the President of Athletics Australia and has previously been a board member of the South Sydney Rabbitohs and for Sydney FC.