A leadership spill in the Australian Labor Party, the party of government in the Parliament of Australia, was held on 21 March 2013. Prime Minister Julia Gillard called a ballot for the Leadership and Deputy Leadership of the Labor Party for 4.30pm, following a press conference by former Labor Leader and Regional Minister Simon Crean over persistent leadership tensions. At the caucus meeting, no alternative candidates nominated for the positions, and so Gillard and Wayne Swan were re-elected unopposed.

Simon Findlay Crean was an Australian politician and trade unionist. He was the leader of the Australian Labor Party (ALP) and leader of the opposition from 2001 to 2003. He represented the seat of Hotham in the House of Representatives from 1990 to 2013 and was a cabinet minister in the Hawke, Keating, Rudd and Gillard governments.