| Honorific-Prefix: | The Honourable |
| William Dawnay-Mould | |
| Constituency Am: | Dandenong |
| Assembly: | Victorian Legislative |
| Term Start: | 8 November 1947 |
| Term End: | 5 December 1952 |
| Predecessor: | Frank Field |
| Successor: | Les Coates |
| Birth Date: | 1901 11, df=yes |
| Birth Place: | Hither Green, England |
| Death Place: | Brisbane, Queensland, Australia |
| Birthname: | William Roy Dawnay-Mould |
| Nationality: | British |
| Citizenship: | Australian |
| Party: | Liberal Party Liberal and Country Party |
| Otherparty: | Victorian Liberal Party |
| Children: | Two daughters |
| Education: | St Dunstan's College |
| Occupation: | Real estate agent |
William Roy Dawnay-Mould (2 November 1901 – 5 March 1985) was an English-born Australian politician.
Dawnay-Mould was born in Hither Green, Kent, and was educated privately and at St Dunstan's College. Whilst in England, he was a member of the Conservative Party.[1]
In 1921, he emigrated to Melbourne and became a real estate agent and auctioneer. From 1946 to 1948, he served as a councillor on Sandringham City Council.
At the 1947 Victorian state election, he was elected to the Victorian Legislative Assembly, representing the Liberal Party, which became the Liberal and Country Party in 1949. In 1952, Dawnay-Mould supported former LCP leader Thomas Hollway, and was Minister for Health, Minister of Mines and Minister-in-Charge of Housing and Materials in the "seventy-hour ministry" formed by Hollway in October 1952. The Governor of Victoria dismissed Hollway's government and called an election at which Dawnay-Mould was defeated.
He unsuccessfully contested the Malvern by-election in August 1953, and was expelled from the Liberal and Country Party for contesting the by-election as a Hollway Liberal.[2] [3]