| Anne Brudevold Invest AS | Real estate | 2019 |
| Anne Cecilie Hallquist AS | Health & social care | 2013 |
| Anne Johnsen AS | | 2024 |
| Anne Karine Bergene AS | | 2020 |
| Anne Knudsen Eiendom AS | Real estate | 1999 |
| Anne Line Begravelsesbyrå AS | Other services | 2023 |
| Anne Misje AS | Financial services | 2005 |
| Anne Myrvoll Salergonom AS | Wholesale & retail | 2022 |
| Anne På Landet AS | Hospitality | 2014 |
| Anne R. Flåte AS | Professional & scientific | 1998 |
| Anne Tove Sveen AS | Transport & logistics | 1994 |
| Anne Valeur AS | Professional & scientific | 2024 |
| Anne Vasstveit Møbeltapetsering & Interiørsøm AS | Manufacturing | 2000 |
| Anne Øyhus Revling AS | Health & social care | 2000 |
| Annekset AS | Real estate | 2000 |
| Anneli Invest AS | Financial services | 2005 |
| Annema Holding AS | | 2020 |
| Annemvax AS | Financial services | 2013 |
| Annen Etage AS | Hospitality | 2005 |
| Annen Etage Lambertseter AS | Wholesale & retail | 1986 |
| Annen Etage Røa AS | Wholesale & retail | 2003 |
| Annepanne AS | Professional & scientific | 2013 |
| Annetind AS | | 2026 |
| Annette Ferró AS | Wholesale & retail | 2016 |
| Annette Holding AS | Financial services | 2005 |
| Annex Capital AS | Information & communication | 2025 |
| Annex Consulting AS | Real estate | 2015 |
| Annicken Day AS | Education | 2014 |
| Annijor AS | Arts & recreation | 2018 |
| Anniken Binz AS | Education | 2022 |
| Anniken Edesberg Holding AS | | 2025 |
| Anniken Gjelseth Holding AS | | 2021 |
| Anniken Moe Invest AS | | 2021 |
| Annima AS | Real estate | 2002 |
| Annis AS | | 2024 |
| Annis Mathallen AS | Manufacturing | 2012 |
| Annis Oslobukta AS | Wholesale & retail | 2020 |
| Annjann AS | | 2021 |
| Anno 1976 Eiendom AS | Construction | 2025 |
| Anno AS | Education | 2013 |
| Anno Studio for Arkitektur Design Og Landskapsforming Sivilarkitekter Ans | Professional & scientific | 1986 |
| Annobe Da | Health & social care | 2018 |
| Annodd Holding AS | | 2019 |
| Annovation AS | | 2021 |
| Annto AS | | 1997 |
| Annual Classic AS | Real estate | 1998 |
| Anoco Management AS | Professional & scientific | 1993 |
| Anodyne AS | Wholesale & retail | 2017 |
| Anok AS | Professional & scientific | 2020 |
| Anok Consulting AS | Professional & scientific | 2020 |
| Anokhi AS | Hospitality | 2025 |
| Anolitveien 1-3 AS | Real estate | 2010 |
| Anomalab AS | Professional & scientific | 2018 |
| Anonyme Byråkrater AS | Information & communication | 2024 |
| Anonymous Content Nordic AS | Information & communication | 2018 |
| Anorak AS | Professional & scientific | 2011 |
| Anord AS | | 2019 |
| Another Company AS | Financial services | 2015 |
| Another Grandmother AS | Wholesale & retail | 2020 |
| Another Snus Factory Oslo AS | Wholesale & retail | 2019 |
| Another World Entertainment Norway AS | Information & communication | 2011 |
| Anouska Ccvest AS | Wholesale & retail | 2015 |
| Anparo AS | Financial services | 2014 |
| Anrib Invest AS | Financial services | 2016 |
| Anro Invest AS | | 2022 |
| Ans Audim Ellen Wigaard Scheel Og Trygve Scheel | Wholesale & retail | 1978 |
| Ans Bjerregaardsgate 18 I | Real estate | 2002 |
| Ans Bjerregaardsgt 18 II | Real estate | 2003 |
| Ans Bydelsavisa Gamle Oslo | Information & communication | 1990 |
| Ans Chasp | Financial services | 1990 |
| ANS CHINA CITY Wang & Chun | | 1989 |
| Ans Ebbelsgate 3 | Real estate | 1985 |
| Ans Eiendomspart Karl Johans Gate 16 B | Real estate | 1987 |
| Ans Finnsnes Servicebygg | Real estate | 1982 |
| Ans Fredheimveien 3 | Real estate | 1990 |
| Ans Garver Ytterborgsvei 83 | Real estate | 2004 |
| Ans Gfi | | 1986 |
| Ans Grand Hotell Steinkjer | Real estate | 1988 |
| Ans Hayer Dagligvareforretning | Wholesale & retail | 1989 |
| Ans Hvamsvingen 24 | Real estate | 1987 |
| Ans Linvest 1 | | 1991 |
| Ans Nordkapp 1990 | Real estate | 1987 |
| Ans Ritoque Victor & Antonio Olivares | | 1988 |
| Ans Romconsult | Professional & scientific | 1987 |
| Ans Sagene Parkeringshus | Transport & logistics | 1989 |
| Ans Silkyo | Real estate | 2010 |
| Ans Skippergaten 33 | Real estate | 1991 |
| Ans Tangenbygg | Administrative & support | 1988 |
| Ans Tvetenveien 32 | Real estate | 1990 |
| Ans Wernergården | Real estate | 1989 |
| Ans Østre Aker Vei 95 | Real estate | 1989 |
| Ansag Invest AS | | 2022 |
| Ansari Holding AS | Wholesale & retail | 2019 |
| Ansatte Da | Administrative & support | 2010 |
| Ansatteid AS | Professional & scientific | 2017 |
| Ansell Norway AS | Wholesale & retail | 2012 |
| Anseno AS | Professional & scientific | 2025 |
| Ansettr AS | Administrative & support | 2022 |
| Ansgar Invest AS | | 2022 |
| Ansjosen Drift AS | Hospitality | 2021 |