| I Trygge Hender AS | Education | 2004 |
| I. Guttormsen AS | Arts & recreation | 2021 |
| Idera AS | | 2021 |
| Imagine Consulting AS | Professional & scientific | 2003 |
| Industribygg AS | Real estate | 1971 |
| Industrilakkering AS | Manufacturing | 2018 |
| Ingeniør Dalby AS | Professional & scientific | 2023 |
| Innsiktute AS | Health & social care | 2023 |
| Interforma Holding AS | | 2026 |
| Jabe Eiendom AS | Real estate | 2014 |
| Jabe Holding AS | Health & social care | 2005 |
| Janus Omsorg AS | Health & social care | 2011 |
| JL Motor AS | Wholesale & retail | 2024 |
| Johan Follestads Vei 7 AS | Real estate | 1989 |
| K.T. Trans Bud Da | Transport & logistics | 2007 |
| Kameleon Gruppen AS | Wholesale & retail | 2014 |
| Kameleon Leasing AS | Wholesale & retail | 2013 |
| Kameleon Robotics AS | Wholesale & retail | 2017 |
| Kameleon Solutions AS | Wholesale & retail | 1999 |
| Killingholmen Vann- Og Avløpslag SA | Water & waste | 2009 |
| Kjøkkenmakeriet AS | Wholesale & retail | 2017 |
| Kp-Flis AS | Construction | 2022 |
| Kraus Graveservice AS | Construction | 2011 |
| Kreation Invest AS | | 2023 |
| Le Pain Des Fjords AS | Manufacturing | 2024 |
| Lek for Alle AS | Wholesale & retail | 2011 |
| Leon Bygg Og Eiendomsservice AS | Administrative & support | 2018 |
| Lilac AS | Real estate | 2015 |
| Lineli Invest AS | | 2023 |
| Lon AS | Professional & scientific | 2007 |
| LPG AS | Wholesale & retail | 2014 |
| Lyskonsept AS | Professional & scientific | 2016 |
| M.Ruud Holding AS | Construction | 2024 |
| Marine Consultor AS | Transport & logistics | 2016 |
| Marius Heiberg Holding AS | Real estate | 2015 |
| Maskinpakking AS | Manufacturing | 2002 |
| Mathea Holding AS | | 2024 |
| Mattis Media AS | Professional & scientific | 2018 |
| MCL Service AS | Administrative & support | 2024 |
| Meitner AS | Real estate | 2005 |
| Milano Restaurant & Pizzeria Da | Hospitality | 2015 |
| Mjøs Innovasjon AS | | 2021 |
| Mogle & Partners AS | Professional & scientific | 2024 |
| MSK Holding AS | | 2014 |
| Nailah Beauty Belts AS | Wholesale & retail | 2005 |
| Nast AS | Manufacturing | 2022 |
| Neptus AS | Wholesale & retail | 1988 |
| Nilsborg AS | Real estate | 1990 |
| NO1 Øra AS | Professional & scientific | 2026 |
| Norgarden Eiendom AS | Real estate | 2008 |
| Om Rengjøring AS | Administrative & support | 2026 |
| Omsorgspartner AS | Health & social care | 2002 |
| Os Montasje AS | Construction | 2024 |
| P+S Fjordhytter AS | Real estate | 2012 |
| Packovation AS | Administrative & support | 2004 |
| PAULS1 AS | Professional & scientific | 2015 |
| Peoplesearch AS | Professional & scientific | 2024 |
| Plus Prosjekt AS | Real estate | 1988 |
| Property Group AS | Professional & scientific | 2021 |
| Quentines AS | Administrative & support | 2015 |
| Ragnar Hartvig AS | Professional & scientific | 2008 |
| Reder Foto AS | Professional & scientific | 2021 |
| Reklameconsult AS | Professional & scientific | 2014 |
| Rental Group Crane AS | Administrative & support | 2015 |
| Resforma AS | Information & communication | 2011 |
| Ringveien Sør Vann- Og Avløpssamvirke SA | Water & waste | 2016 |
| Ro & Ma AS | Wholesale & retail | 2000 |
| Ro & Ma Eiendom AS | Real estate | 2018 |
| Rocknit AS | | 2024 |
| Rom for Alt AS | Professional & scientific | 2019 |
| Ronny Nygaard Holding AS | Real estate | 2007 |
| RTG Truck Supply AS | Manufacturing | 2019 |
| Rune Sortvik Holding AS | | 2023 |
| Rørleggerbedrift Arild Andersen AS | Construction | 1982 |
| Røyken Grovfyllplass AS | Water & waste | 1990 |
| Røyken Kultur & Drift AS | Hospitality | 2022 |
| Safak Holding AS | | 2020 |
| Sara Weseth Holding AS | | 2025 |
| Sareptas Krukke Ans | Wholesale & retail | 1995 |
| Scala Bad AS | Wholesale & retail | 2018 |
| Selmer Investment AS | Real estate | 2021 |
| Sesongpartner AS | Professional & scientific | 2015 |
| SHB Europe AS | Wholesale & retail | 2025 |
| Sigvartsen Benkeplater AS | Manufacturing | 2024 |
| Skinnende Og Rent AS | Administrative & support | 2019 |
| Skips Og Båtutstyr AS | Wholesale & retail | 2007 |
| Skiwood AS | | 2026 |
| Skrogkh AS | Real estate | 2011 |
| Smak Av Italia Holding AS | | 2026 |
| Snakehips Music & Design AS | Information & communication | 2014 |
| Solid Partner AS | Construction | 2016 |
| Sourcenet AS | Administrative & support | 2007 |
| Spenningen AS | Construction | 2022 |
| SRS Eiendom AS | Real estate | 2008 |
| Staalhjerte AS | Professional & scientific | 2016 |
| Stake Eiendom AS | Real estate | 2006 |
| Stake Holding AS | Real estate | 2006 |
| Stake Utvikling AS | Real estate | 2012 |
| Stenseth & RS Entreprenør AS | Construction | 2002 |
| Stenseth & RS Holding AS | Construction | 2017 |