John Cameron "Robbo" Robertson (born 16 November 1962) is a former Australian politician who served as the leader of the Labor Party in New South Wales from 2011 to 2014.
Before entering politics he was prominent in the union movement.
Robertson was born in Sydney, and worked as an electrician before becoming an organiser for the Electrical Trades Union.
He became an industrial officer with the Labor Council of New South Wales in 1991, and was elected assistant secretary in 1998 and secretary in 2001.
He also served as a vice-president of the Australian Council of Trade Unions.
Robertson entered the New South Wales Legislative Council in 2008, and was appointed to cabinet in 2009.
He switched to the Legislative Assembly at the 2011 state election, where the Labor Party suffered a heavy defeat.
Robertson was elected party leader following Kristina Keneally's resignation, becoming leader of the opposition.
He resigned the leadership in the aftermath of the 2014 Sydney hostage crisis, after the disclosure of a minor link with its perpetrator.
Robertson left politics in August 2017 to work in the non-profit sector.