Oliver Duff OBE (28 May 1883 – 2 March 1967) was a New Zealand writer and editor. In 1939 he was founding editor of the New Zealand Listener, a widely read magazine with a national monopoly on publishing radio and television programs.
Duff was born in Waitahuna Gully, a gold mining town in Otago. He received his tertiary education at Otago and Canterbury Universities. At the age of 18 he volunteered for the South African war and on his return he won a scholarship to study for the Presbyterian ministry from the Synod of Otago and Southland. Influenced by writers such as Emerson and Thoreau he dropped out and became a journalist. He worked on a number of papers including the Sun in Christchurch, The Timaru Herald (as editor), The Press in Christchurch, as editorial assistant (under Michael Cormac Keane) then editor. At The Press he worked with writers such as Ngaio Marsh, M. H. Holcroft and Walter D'Arcy Cresswell. He resigned over his coverage of the Christchurch tramway strike, which the owners thought too sympathetic to the unions.
On 12 October 1908 at Dunedin he married Jessie Barclay they had three sons and a daughter, but divorced in 1937. As Jess Whitworth she published an autobiographical novel, Otago Interval in 1950. Their son Roger Duff (1912–1978) became an ethnologist and director of the Canterbury Museum. Their daughter Alison Duff (1914–2000) was a sculptor. Their son Gowan Duff (Pat), a forestry scientist, was father of novelist Alan Duff. Duff remarried in 1946 to Ngaire Asquith Shankland, shortly before his retirement.
- McLintock, A. H., ed. (22 April 2009) [First published in 1966]. "Duff, Oliver". An Encyclopaedia of New Zealand. Ministry for Culture and Heritage / Te Manatū Taonga. Retrieved 19 February 2017.
- "Mr. O. Duff to contest Hurunui seat". The Press. LXXI (21593). 2 October 1935. p. 12. Retrieved 18 February 2017.
- "New Zealand Now". NZETC. 2011. Retrieved 30 June 2011.
- "Otago Interval". nlnzcat.natlib.govt.nz. 2011. Retrieved 30 June 2011.
'Although the prize winning novel in a competition arranged by the Progressive Publishing Society in 1945, it is substantially the recollections of childhood and youth of the author (later Mrs Oliver Duff) in Otago and Dunedin'--Bagnall.
- Davidson, Janet. "Duff, Roger Shepherd". Dictionary of New Zealand Biography. Ministry for Culture and Heritage. Retrieved 19 February 2017.
- "Duff, Alison". Museum of New Zealand Te Papa Tongarewa. collections.tepapa.govt.nz. 2011. Retrieved 30 June 2011.
- "Dear Dad". New Zealand Listener. 2011. Retrieved 30 June 2011.
- McEldowney, Dennis. "Duff, Roger Shepherd". Dictionary of New Zealand Biography. Ministry for Culture and Heritage. Retrieved 19 February 2017.