William Beckwith McInnes | |
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| Born | 18 May 1889 |
| Died | 9 November 1939 (aged 50) Melbourne, Victoria |
| Nationality | Australian |
| Known for | portraits |
| Spouse | Violet Murial Musgrave (1915–39) |
| Awards | Archibald Prize, 7 times between 1921–1939; Wynne Prize (1921) |
William Beckwith McInnes (18 May 1889 – 9 November 1939) was an Australian portrait painter, winner of the Archibald Prize seven times for his traditional style paintings. He was acting-director at the National Gallery of Victoria and an instructor in its art school.