| Honorific-Prefix: | The Honourable |
| Ian Viner | |
| Honorific-Suffix: | AO QC |
| Office1: | Minister for Defence Support |
| Primeminister1: | Malcolm Fraser |
| Term Start1: | 7 May 1982 |
| Term End1: | 11 March 1983 |
| Predecessor1: | office established |
| Successor1: | Brian Howe |
| Office2: | Minister for Industrial Relations |
| Term Start2: | 16 April 1981 |
| Term End2: | 7 May 1982 |
| Predecessor2: | Andrew Peacock |
| Successor2: | Ian Macphee |
| Office3: | Leader of the House |
| Leader3: | Malcolm Fraser |
| Term Start3: | 27 September 1979 |
| Term End3: | 19 August 1980 |
| Predecessor3: | Ian Sinclair |
| Successor3: | Ian Sinclair |
| Office4: | Minister of Employment and Youth Affairs |
| Term Start4: | 5 December 1978 |
| Term End4: | 6 April 1981 |
| Predecessor4: | Tony Street |
| Successor4: | Neil Brown |
| Office5: | Minister of Aboriginal Affairs |
| Term Start5: | 22 December 1975 |
| Term End5: | 5 December 1978 |
| Predecessor5: | Tom Drake-Brockman |
| Successor5: | Fred Chaney |
| Constituency Mp6: | Stirling |
| Parliament6: | Australian |
| Predecessor6: | Harry Webb |
| Successor6: | Ron Edwards |
| Term Start6: | 2 December 1972 |
| Term End6: | 5 March 1983 |
| Birth Name: | Robert Ian Viner |
| Birth Date: | 1933 1, df=yes |
| Birth Place: | Claremont, Western Australia |
| Nationality: | Australian |
| Party: | Liberal Party of Australia |
Robert Ian Viner AO (born 21 January 1933) is an Australian solicitor and barrister,[1] and former politician. He was the Liberal member for the House of Representatives seat of Stirling from 1972 until his defeat by Labor's Ron Edwards in the 1983 election.[2] He was Minister for Aboriginal Affairs from 1975 to 1978, Minister for Employment and Youth Affairs from 1978 to 1981—he was a cabinet minister from November 1980. In 1981, he was appointed Minister for Industrial Relations and, in April 1982, Minister for Defence Support and Minister Assisting the Minister for Defence[1] and a member of the Defence Council.
Viner is a former first-grade hockey player in Perth competitions. He has also represented Western Australia and Australia in veterans' hockey. He was captain of the first Australian Masters international touring team (1989–1990).[1]
He was appointed an Officer of the Order of Australia in the Queen's Birthday Honours in June 1999.[3]