David Cosman Nettheim (10 July 1925 – 11 March 2008) was an Australian actor and stage writer, he acted on stage and film, but was best known of this roles in numerous television series.
Born in Sydney, New South Wales, and brought up in Cremorne Point the eldest son of actor (Leslie) Roy Nettheim (who hosted a classical music programme on radio 2GB and its Macquarie Radio Network) and the actress Mary Hosking, he was introduced to the theatre when his parents joined Doris Fitton's Independent Theatre.
He worked with Michael Bentine and John Bluthal in the Goon Show-like radio programme Three's a Crowd for radio 2UE, which ran for 34 weekly half-hour episodes. He next worked in Britain with Peter Sellers and Michael Bentine in the 1957 television comedy skit show Yes, It's the Cathode-Ray Tube Show. The following year he moved to Britain, and for 20 years he was seldom out of work but maintained ties with Australia in regular hookups with John West for his radio programme The Showman. In 1971 he appeared in the acclaimed BBC drama Elizabeth R as forger Thomas Phelippes.
In 1977 he settled in the Sydney suburb of Glebe. He appeared in stage and television productions, and took on the positions of federal treasurer for [Actors Equity of Australia|Actors Equity]] (now Media, Entertainment and Arts Alliance). He was involved in the doomed campaign to save the Regent Theatre in Sydney from demolition and helped manage the Actors' Benevolent Fund.
He died 11 March 2008 in Sydney aged 82. He never married and was survived by two brothers and two sisters.
- Make Mine a Million (1959)
- The Promise (1969)
- The Pied Piper (1972)
- Never Mind the Quality, Feel the Width (1973)
- In Showbiz from the Age of Three Sydney Morning Herald 17 March 2008 accessed 3 September 2011
- http://www.nfsa.gov.au/site_media/uploads/file/2011/12/05/NFSA_Radio_series_collection_amended.pdf "Australian Radio Series 1930s to 1970s. A guide to ScreenSound Australia’s holdings" accessed 5 September 2011