| AMCOS | Rights Society | | Australia | 1979 | | |
| AMEB | | | Australia | 1918 | | |
| Amongst Projects | | | Australia | | | |
| Ampersand | Original Production | | Australia | 1943-09 | 1955 | |
| Amplifire Music | | | Brisbane, Queensland, Australia | 2004 | | |
| An Island Records | | | Australia | | | |
| Analogue Attic Recordings | | | Melbourne, Victoria, Australia | | | |
| Anchor & Hope | Original Production | | Australia | | | |
| Android Muziq | Original Production | | Australia | | | |
| ANGEL RADIO | Publisher | | Australia | 2022-07-18 | | |
| Angelus | Imprint | | Australia | 1928 | 1931 | |
| Angry Dog Records | Original Production | | Australia | | | |
| Angus and Julia Stone Pty Ltd. | | | New South Wales, Australia | 2006-03-21 | | |
| Animalia | Original Production | | Melbourne, Victoria, Australia | | | |
| Animals Dancing | Original Production | | Melbourne, Victoria, Australia | 2014 | | |
| Another Intercorps Production | Original Production | | Australia | | | |
| Ante Up Distro | Distributor | | Australia | | | |
| Anterograde | | | Melbourne, Victoria, Australia | | | |
| Antfarm Records | | | Australia | 1996 | | |
| ANTI FADE records | | | Geelong, Victoria, Australia | | | |
| Anti Vinyl Vinyl Club | Production | | Melbourne, Victoria, Australia | 2021-07-01 | | |
| Antipodean Darkness | | | Australia | | | |
| Antipodes | | | Australia | | | |
| AO Adults Only | | | Melbourne, Victoria, Australia | | | |
| Apeface Records | | | Australia | | | |
| Aphotic Audio | Production | | Australia | 2003 | | |
| Apocalyptor Records | | | Australia | | [unknown] | |
| Applause | Imprint | | Australia | | | |
| Apple House Music | Distributor | | Australia | 1993 | | |
| APRA | Rights Society | | Australia | 1926 | | |
| Aquamudvuv | Original Production | | Australia | | | |
| Aquatic Lab | Original Production | | Australia | 2006 | | |
| AR53 | Production | | Melbourne, Victoria, Australia | 2020 | | |
| Architecture | Original Production | | Australia | 2002 | | |
| Architronica | Original Production | | Melbourne, Victoria, Australia | | | |
| Archon Music | | | Sydney, New South Wales, Australia | 1993 | 1996 | |
| Arctic Records | Original Production | | Brisbane, Queensland, Australia | | | |
| Aristotle's Box | | | Australia | | | |
| Army of Nerds | Original Production | | Australia | | | |
| ARNIOE | | | Australia | | | |
| Arrowhead | Original Production | | Australia | | | |
| Art as Catharsis Records | Production | | Sydney, New South Wales, Australia | | | |
| Art School Dropout | Original Production | | Australia | | | |
| Artful Balance Records | | | Australia | | | |
| Artists Known As | Original Production | | Australia | | | |
| Artscope Music | Production | | Australia | | | |
| Artswa | | | Australia | | | |
| ARTUROS RECORDS | Publisher | | Brisbane, Queensland, Australia | 2018 | | |
| Ascension Records | | | Australia | | | |
| Asgard Musik | Original Production | | Australia | | | |
| Asphyxiate Recordings | | | Australia | | | |
| Assemblers Records | Original Production | | Australia | | | |
| Association of Independent Record Labels (AIR) | | | Australia | | | |
| Aston Shuffle Music Pty Ltd | Original Production | | Australia | | | |
| Astor | | | Australia | | [unknown] | |
| Astor Records | Distributor | | Australia | | | |
| ATA | Original Production | | Sydney, New South Wales, Australia | 1965-05 | | |
| Atrocity Altar | | | Australia | | | |
| Atrophic Society | Imprint | | Australia | 2014 | | |
| Atropos Records Aust. | | | Australia | | | |
| Au Go Go | Original Production | | Melbourne, Victoria, Australia | 1979 | | |
| Audio Network Australia Pty Ltd | Distributor | | Australia | 2008 | | |
| Audio Visual Marketing Pty Ltd | | | Australia | | | |
| Audioary Records | Original Production | | Canberra, Australian Capital Territory, Australia | | | |
| Audiopaxx | Original Production | | Sydney, New South Wales, Australia | | | |
| Audrey Records | Original Production | | Australia | | | |
| Aural Industries | Original Production | | Australia | | | |
| Aurora | Original Production | | Australia | | | |
| Aussie Bastard | | | Australia | | | |
| Aussie Hardstyle Recordz | | | Australia | | | |
| Australiacs Records | | | Australia | | | |
| Australian Broadcasting Corporation | Holding | | Australia | 1932-07-01 | | |
| Australian Music Centre | Publisher | | Australia | | | |
| Australian Record Company Ltd. | Holding | | Sydney, New South Wales, Australia | 1953-10 | 1977-10-16 | |
| Australian Recording Industry Association | | | Australia | | | |
| Australian United Recording Artists | Original Production | | Australia | | | |
| Australibus Tenebris | | | Australia | 2013 | | |
| Autumn Recordings | Original Production | | Australia | | | |
| Avant Garde Records | Original Production | | St Kilda, City of Port Phillip, Victoria, Australia | | | |
| Avantwhatever | Original Production | | Melbourne, Victoria, Australia | | | |
| Avastera | Production | | Australia | | | |
| Avenue Records | Original Production | | Australia | | | |
| Avion Music Publishing | Original Production | | Australia | | | |
| AVM | Imprint | | Australia | | | |
| Award International Pty Ltd. | Holding | | Australia | | | |
| Axis | Reissue Production | | Australia | | | |
| AXLE Records | Original Production | | Australia | | | |
| Aztec Music | Reissue Production | | Australia | 2005 | | |
| Azwan Music | | | Australia | | | |
| B-Dependent | Original Production | | Australia | | | |
| Baboso Recording Company | Publisher | | Australia | | | |
| Bacalunga Music | Publisher | | Australia | | | |
| BACH2ROQ MUSIC | | | Australia | | | |
| Backpocket Slammers | | | Melbourne, Victoria, Australia | | | |
| Backyard Charlie's | | | Australia | | | |
| Bacon 'n Eggs Mate | | | Australia | | | |
| Bad Apples Music | | | Australia | | | |
| Bad Cop Bad Cop Recordings | Original Production | | Australia | | | |
| Bad Habit Records | | | Australia | | | |
| Bad Penny Records | | | Australia | | | |