- A Band Apart
- A Hoarders Inc. production.
- A Jazz Hour with
- A Library Record Oxford
- A Records
- A Time Warner Compagny
- A&A
- A&B
- A&E
- A&M
- A&M records
- A&R
- A&X
- A-dept
- A-Records
- A. Decap Sound
- A.A.
- A.D.S.
- A.F.O.
- A.F.P.
- A.K.A.
- A.N.S. (Angelo Noce Santoro)
- A27
- AA Music
- AA&A
- Aaarg
- AAO Music
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- AB
- AB Productions
- Abacus
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- ABC records
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- Aber disc
- Abet
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- Abkco Records
- Able
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- AbraCadaver
- Absalom
- Absentee
- Absolute
- Absolute Marketing
- Absolutely
- Abstract
- Académie Charles Cros
- Acadia
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- Accession
- Accord
- Accorde
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- Acdam
- ACE
- Ace of Clubs
- Ace Of Diamonds Records
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- Acetate
- Achas
- Achterdyk Produksjes
- Acid Jazz
- Acid Records Group
- Acor
- Acoustic Music
- ACR
- Acrobat Licensing
- Act
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- Action
- Action Front
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- Action Replay
- Activ
- Active
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- ACUM
- Ad van Olm studio
- Ad Visser
- ADA
- Adam Gee
- ADD
- Adda
- Adèle
- Adès
- Adko Records
- ADM
- ADN Hardcore
- Adssono
- Advance
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- AEgean
- AFE
- Affinity
- Affluent
- AFM
- Afrikanism
- Aftermath
- AG
- AGAT Company
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- Aggrovation
- Agit Prop
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- AGR-Prodution.
- Ahead
- Ahead Of Our Time
- AHED
- Ahoy
- Aim
- Air
- Air Raid
- Airplay
- AJAZ
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- Akarma Records
- Akashic
- AKM
- AL
- Al Capone
- Ala
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- Aladdin
- Alamac
- Alarma
- Alasca Sun(rise) Songs
- Albany
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- Album
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- Alchemy Entertainment
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- Aleph
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- Alia Vox
- Alkor
- All
- All Around The World
- All Art Jazz
- All Or Nothing
- All-Time
- Allegro
- Alles
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- Allied
- Alligator
- Alligator Records
- Allright
- Allround
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- Almo Sounds
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- Alphabet City
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- Alsdorf
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- Altitude
- Alto
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- AM Records
- Amadeo
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- Amber Music
- Ambo
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- Amco
- America
- American
- American Clave
- American Cowboy Songs
- American Gothic
- American Jazz Band
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- American Standard
- American Typewriter
- Americom Corp.
- AMG
- Amherst
- Ami
- AmiaMusica
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- Amorion
- AMP Records
- Ampersand Records
- Ampex
- Amphetamine Reptile
- Ample
- Amro bank
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- Amstel
- Amsterdams Effectenkantoor
- Amuse America
- AMY
- Anachron Sounds
- Anacrouse
- Anagon
- Anagram
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- Anchor
- ANGB
- Angel
- Angel Air
- Angry Neighbour
- Angry Scenes
- ANGST
- Angular records
- Animal
- Animato
- Another
- Another Fine Mess
- Another Planet
- ANR
- Antar
- Antelope
- Antena
- Anthem
- Anthology
- Anti
- Anti-Gravity
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- Anticon
- Antilles
- Antler
- Antler Subway
- Antone's
- AnTrop
- Ant®n
- ANWB
- Anxious
- Apace
- Apache
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- Apia
- Apogee studio
- Appelsientje
- Applaus
- Apple
- Apple (fake)
- April Music
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- Arabella
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- ARC
- ARC records
- Arca
- Arcade
- Arcade Records
- Arcane
- Arch
- Archip
- Archiv
- Archiv Produktion
- Archive of Folk & Jazz
- Archives of Jazz
- Ardeck
- Ardent
- Areal
- Areito Egrem
- Arena
- Arfak
- ARG
- Argo
- Arhiv-record
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- Aries
- Ariola
- Ariola Express
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- Arising artist
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- Aristo
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- Ariston
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- ArjenLee
- Ark 21
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- Armada Music
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- Armando Curcio Editore
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- Arrival
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- ARS Productions
- Ars/Clip
- Arsenal
- Art Moderne
- Art Of Dance
- Arte Nova classics
- Artemis
- Artesuono
- Artful Balance
- Artimusic
- Artist & Company
- Artone
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- As Top
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- Asthmatic Kitty
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- Astrée
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- Asylum
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- Atelier
- Atenzia Records
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- Atlanta
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- Audi Ton
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- Audiophile classics
- AudioQuest
- Auditon
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- Aufruhr
- August
- Auntie Social Music
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- Aura Music
- Aural Gratification
- Auspicious
- Aussie
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- Avanti
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- Avenue
- Aves
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- Avex-Critique
- AVI
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- Avon Musik
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- AVRO disc
- Awa
- Aware
- Awesome
- Ax/ction
- Axe
- Axiom
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- Azeroth music
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- Azuli Records