Bedrift A - Rjukan
- Andresen
- Agitato
- Aspit AS
- assistCo AS
- Assistco AS
- Aksvik Drift
- Anton Verkhovskyi
- Alseth Maskin
- Allen Medic
- Arnfinn Lurås
- Alicia Nabub
- Alfheim Trading AS
- Ads Sentrum AS
- Ads Invest AS
- Ads Holding AS
- AS Rjukan Forretningsbygg
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- Ads Eiendom AS
- Arnfinn Sauro AS
- Alseth Maskin AS
- Assistco Eiendom AS
- Apo Holding AS
- Ausland Holding AS
- Auke Fertilizer AS
- Angen Service AS
- Alvefoss Productions
- Adm Eiendom AS
- Andersm Holding AS
- Admini Ep AS
- Andersen Språktjenester
- Advokatfirma Gjøystdal
- Aktiv Tinn/Vinje
- Aider Rjukan
- AtB-nett AS
- Alvefoss Coppélia Feline
- Anna Maria Jaklik
- Arild Kristiansen Production
- Art Of Birkeland
- Aider Rjukan Sosialkomite
- Abhishek Kumar Jagga
- Alt Tet Telemark
- Aider Rjukan Sosialkomite
- A.K.Adolfsen
- Amundsen Fane Eiendom
- Apex Vega Nyiri
- Advokat Per Lykke
- Anniken Bjertnes Johannessen
- Ann-Kristin Haugen
- Aimtjenester Arnt Ivar Mårdalen
- Amai Norge Zoltan Aszalos
- A til Å Entreprenør AS
- Advokat Eirik Sannes Jonassen
- A til Å Holding AS
- A til Å Eiendom AS
- Anleggstjenesten i Tinn Kommune
- A til Å Utvikling AS
- Akzo Nobel Industrial Chemicals Bv
- AL-Nuur Moske Islamsk Kultur Senter
- AL-Nuur Moske Islamsk Kultur Senter
- Aihan Jafs Human Rights Center
- Art From North.Com Eva Brydøy