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.

Two leadership spills of the Australian Labor Party (ALP), the official opposition party in the Parliament of Australia, were held on 16 June 2003 and 2 December 2003, respectively. The Opposition Leader, Simon Crean, won the ballot in June against former opposition leader Kim Beazley, but resigned as leader in late November after losing support from his colleagues and did not contest the December ballot which Mark Latham won against Kim Beazley.