Sir Des O'Neil | |
|---|---|
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| Deputy Premier of Western Australia | |
| In office 5 June 1975 – 5 March 1980 | |
| Premier | Sir Charles Court |
| Preceded by | Ray McPharlin |
| Succeeded by | Ray O'Connor |
| Deputy Leader of the Liberal Party in Western Australia | |
| In office 5 June 1972 – 5 March 1980 | |
| Preceded by | Charles Court |
| Succeeded by | Ray O'Connor |
| Member of the Legislative Assembly of Western Australia | |
| In office 21 March 1959 – 31 March 1962 | |
| Preceded by | William Gaffy |
| Succeeded by | Don May |
| Constituency | Canning |
| In office 31 March 1962 – 23 February 1980 | |
| Preceded by | None (new seat) |
| Succeeded by | Anthony Trethowan |
| Constituency | East Melville |
| Personal details | |
| Born | 27 September 1920 Subiaco, Western Australia, Australia |
| Died | 25 September 1999 (aged 78) Wilson, Western Australia, Australia |
| Political party | Liberal |
Sir Desmond Henry O'Neil (27 September 1920 – 25 September 1999) was an Australian politician who was a Liberal Party member of the Legislative Assembly of Western Australia from 1959 to 1980. He was a minister in the governments of Sir David Brand and Sir Charles Court, and served as deputy premier to Court between 1975 and 1980.