List of ambassadors of Australia to Austria
The ambassador of Australia to Austria and permanent representative of Australia to the United Nations Office in Vienna is an officer of the Australian Department of Foreign Affairs and Trade and the head of the Embassy of the Commonwealth of Australia to the Republic of Austria in Vienna. The position has the rank and status of an ambassador extraordinary and plenipotentiary and holds non-resident accreditation for Bosnia and Herzegovina, Hungary, Kosovo, Slovakia, and Slovenia as a non-resident ambassador. From 1968 to 1974 the ambassador held accreditation for Switzerland until it was transferred to a newly opened Australian embassy in Bern. An Australian embassy existed in Budapest, Hungary, from 1972 until its closure in July 2013. From February 1992 to October 1999, the ambassador in Vienna also held accreditation to Croatia. From 1973 to 1978, responsibility for Czechoslovakia was held by the ambassador resident in Vienna, after which it was transferred to the Australian Embassy in Warsaw.
The ambassador is currently Ian Biggs. Austria and Australia have enjoyed official diplomatic relations since 1966. The ambassador also acts as Australia's permanent representative to the United Nations Office in Vienna since its establishment on 1 January 1980, including as the representative and governor on the Board of Governors of the International Atomic Energy Agency and the Comprehensive Test Ban Treaty Preparatory Commission.
List of ambassadors
| Ordinal | Officeholder | Other offices | Term start date | Term end date | Time in office | Notes |
| 1 | Malcolm Morris | 1966 | 1970 | years | ||
| 2 | Lawrence Corkery | 1970 | 1972 | years | ||
| 3 | 1972 | 1974 | years | |||
| 4 | February 1975 | 1977 | years | |||
| 5 | 1977 | 1980 | years | |||
| 6 | Duncan Campbell | 1980 | 1984 | years | ||
| 7 | John Kelso | 1984 | 1988 | years | ||
| 8 | Michael Wilson | 1988 | 1993 | years | ||
| 9 | Ronald Walker | 1993 | 1996 | years | ||
| 10 | Lance Joseph | 1996 | 2000 | years | ||
| 11 | Max Hughes | 2000 | 2003 | years | ||
| 12 | Deborah Stokes | 2003 | 2006 | years | ||
| 13 | 2006 | 2009 | years | |||
| 14 | 2009 | 2012 | years | |||
| 15 | 12 September 2012 | 2016 | years | |||
| 16 | Brendon Hammer | October 2016 | September 2019 | |||
| 17 | Richard Sadleir | September 2019 | incumbent |