William Ralph Boucher Hassell, best known as Bill Hassell, (born 6 June 1943) is an Australian former politician who was Leader of the Opposition in Western Australia during the mid-1980s. He was a member of the Western Australian Legislative Assembly seat of Cottesloe between 1977 and 1990.
|Member of the Western Australian Parliament|
19 February 1977 – 28 June 1990
|Preceded by||Ross Hutchinson|
|Succeeded by||Colin Barnett|
|20th Leader of the Opposition (Western Australia)|
15 February 1984 – 25 November 1986
|Preceded by||Ray O'Connor|
|Succeeded by||Barry MacKinnon|
|Agent-General for Western Australia|
William Ralph Boucher Hassell
6 June 1943
|Political party||Liberal Party|
|Alma mater||University of Western Australia|
Hassell's subsequent political career saw him served as deputy mayor on Nedlands Council and in this capacity in November 2019, he stated that “Although I loathe and detest welcomes to the country, I sit through them patiently when we have these ceremonies”  Seven months later in June 2020, Hassell tendered his resignation as deputy mayor and from the council.
- "Alumni - Graduates - Bill Hassell (1965)". University of Western Australia. Retrieved 9 November 2012.
- "A numerical listing of Members of the Legislative Assembly since 1890" (PDF). Parliamentary Library Western Australia. Parliament of Western Australia. October 2012. p. 9. Retrieved 9 November 2012.
- "Leaders of the Opposition from 1905" (PDF). Parliamentary Library Western Australia. Parliament of Western Australia. 21 March 2012. Retrieved 9 November 2012.
- Dickinson, Ben (16 November 2019). "Hassell blames militants for 'Invasion Day'" (PDF). Post Newspapers. Retrieved 7 December 2019.
|Parliament of Western Australia|
| Member for Cottesloe
| Leader of the Opposition
|Party political offices|
| Leader of the WA Liberal Party