Peter Gilbert da Conceicao Foss QC (born 24 March 1946 in England) is a former Australian politician, who represented the Liberal Party.Elected to parliament in the 1989 state election, he was a member of the Western Australian Legislative Council representing the East Metropolitan Region, he was re-elected in 1993, 1996, and 2001.
He retired in 2005.During his time in parliament he served as:
Minister for Health; Consumer Affairs: 16 February 1993 – 10 February 1995
Minister for the Arts: 16 February 1993 – 22 December 1999
Minister for Fair Trading: 3 November 1993 – 21 December 1995
Minister for Water Resources: 10 February 1995 – 21 December 1995
Minister for the Environment: 10 February 1995 – 9 January 1997
Attorney General; Minister for Justice: 21 December 1995 – 16 February 2001He worked as a barrister and solicitor before entering parliament.
He was appointed Queen's Counsel while serving as Attorney-General of Western Australia.