| A Records | 2006 | Original Production | — |
| ABC Records | — | Original Production | — |
| ABM | — | Distributor | — |
| Abstract Sounds | — | Original Production | 8270 |
| Accidental | January 2000 | — | 58229 |
| Ace | 1978 | Reissue Production | 5982 |
| Acid Jazz | 1987 | Imprint | 7388 |
| Acrobat | — | Imprint | — |
| Active Records | 1988 | Original Production | — |
| AD 93 | 12 June 2020 | Original Production | — |
| AD Music | 1989 | — | 13643 |
| Advance//d Recordings | 2001 | Original Production | — |
| Aesthetic Death | 1992 | Original Production | — |
| Affinity | 1977 | Reissue Production | — |
| Against the Grain | 2000 | Original Production | — |
| Agitated Records | 2009 | Original Production | — |
| Ai Records | — | Original Production | — |
| Albion Records | 1976 | Original Production | — |
| Alchemy | — | Original Production | — |
| Alchemy Records | May 2001 | Original Production | — |
| All Around the World | — | Original Production | 7341 |
| All Saints Records | 1991 | Production | — |
| Alola | 1994 | Original Production | — |
| Alter Ego Records | 2005 | Original Production | — |
| Alucard Publishing Limited | — | Publisher | — |
| AM:PM | 1994 | Imprint | 407 |
| Ambiel Music | 1 April 2007 | Imprint | — |
| AMF Records | 2014 | Imprint | — |
| Analog Baroque | 1998 | Original Production | — |
| Angel Air | February 1997 | Reissue Production | 10415 |
| Angular Recording Corporation | June 2003 | Original Production | — |
| ANGVIS | 23 July 2020 | — | private company limited by shares |
| Anjunabeats | 1 April 2000 | Original Production | — |
| Anjunadeep Explorations | 2024 | Original Production | — |
| Antilles | — | Production | 383 |
| Anxious Records | — | Imprint | 7987 |
| Ape House | 2002 | Original Production | — |
| Apex | — | — | 2822 |
| Aphrodite Recordings | — | Original Production | — |
| Apple Records | 1968 | Original Production | 1074 |
| Architecture Recordings | 1996 | Original Production | — |
| Argo | 1951 | Imprint | — |
| Ariwa | 1979 | Original Production | — |
| Artists Against Success | 1994 | Original Production | — |
| Ash International | 1993 | Original Production | — |
| Astrophonica | 2009 | Original Production | — |
| Asylum Records UK | — | Holding | — |
| Atomhenge | 2008 | Original Production | — |
| Atomic Heart Records | — | Original Production | 9342 |
| ATP Recordings | 2001 | Original Production | — |
| Attack | 1969 | Original Production | — |
| Attack Attack | — | Production | 5808 |
| Attack Records | — | Original Production | — |
| Audio Archives | 1992 | Reissue Production | — |
| Audio Gourmet | 2010 | Original Production | — |
| Audio Network | 23 July 2001 | Original Production | 27831 |
| Audio Phreaks | 2009 | — | — |
| Audiobulb Records | 2003 | Original Production | — |
| AudioFile Records | 26 January 2009 | Holding | — |
| AudioGO | 10 August 2010 | Original Production | — |
| AudioPorn Records | 2007 | Original Production | — |
| Aurora Borealis | — | Original Production | — |
| Aus Music | 2004 | Original Production | 14961 |
| AVA Recordings | 2006 | Original Production | — |
| Avalanche Recordings | 2000 | Original Production | — |
| Avalon Records | — | Original Production | — |
| Avid Entertainment | 1991 | — | 12869 |
| Avid Jazz | — | Imprint | 12869 |
| Avie Records | 2002 | Production | 11982 |
| AWAL | 1997 | Distributor | — |
| AWAL Recordings Ltd | 12 June 2008 | Holding | 30596 |
| Awesome Records | — | Original Production | — |
| Azuli Records | 1991 | Original Production | — |