William Mortimer Clarence Denham (August 1888 – 21 September 1969) was a New Zealand politician of the Labour Party.

Denham was born in Sydney, New South Wales, Australia, in August 1888,[1] and was educated both there and in Melbourne.

While an MP he legislated for the establishment of the Invercargill Licensing Trust in 1944 and advocated for a special fund for writers, resulting in the formation of the Literary Grants Advisory Board.

He also highlighted Nash's ideological inconsistency given that he had hitherto been an opponent of racism throughout his political career.

[3] He is buried at Invercargill's Eastern Cemetery, along with his wife Gwendolyn who died 1 January 1971, and his mother-in-law Ada Meadows.