| Ove Raaen Holding AS | | 2026 |
| Prosjekt Teknikk AS | Construction | 2005 |
| PVR Controller AS | Real estate | 1995 |
| Påverudvegen SA | Real estate | 2024 |
| Qvisten Bilberging AS | Transport & logistics | 1981 |
| R. Rukke Holding AS | | 2015 |
| Ragnars Media Hus AS | Information & communication | 2026 |
| Ranten Hotell AS | Hospitality | 1997 |
| Ranten Hotellbygg AS | Real estate | 2022 |
| Rast Bygg AS | Construction | 2023 |
| Rast Maskin AS | Construction | 2025 |
| Reine Element AS | Manufacturing | 2019 |
| Renato Giacomello Mur Og Flis AS | Construction | 2011 |
| Renlok AS | Administrative & support | 2022 |
| RG Landbruksdrift AS | Agriculture & fishing | 2025 |
| Rodegård Eiendom AS | Real estate | 1977 |
| Rudsviken Eiendom AS | | 2017 |
| Rudsviken Holding AS | | 2021 |
| Rudsvollen AS | Real estate | 2020 |
| Rukke Eiendom AS | Real estate | 1974 |
| Rukkedalsvegen 44 AS | Real estate | 2019 |
| Rukkedalsvegen 45 AS | Real estate | 2022 |
| Rukkedalsvegen 47 AS | Real estate | 2022 |
| Rukkedalsvegen 5 AS | Real estate | 2022 |
| Rukkelivegen SA | Real estate | 2019 |
| Rustadstølvegen SA | Real estate | 2023 |
| Rustand Holding AS | Construction | 2019 |
| Rustand Maskinservice AS | Construction | 2019 |
| Rødningen Da | Wholesale & retail | 2005 |
| Rørservice Nesbyen AS | Construction | 2008 |
| Sanden Eiendom AS | Real estate | 2006 |
| Sandenvegen SA | Agriculture & fishing | 1969 |
| Saupeset Skog Ans | Agriculture & fishing | 1995 |
| SBG Multiservice AS | Transport & logistics | 2022 |
| Sel Eiendom AS | Real estate | 2013 |
| Sevre Auto Da | Other services | 2006 |
| Sjur Bidne Maskin AS | Construction | 1998 |
| Sjåfunatten AS | Real estate | 2015 |
| Skade- Og Rehab.Service AS | Real estate | 1996 |
| Skarslia Eiendom AS | Real estate | 2002 |
| Skålsrudstølvegen SA | Real estate | 2019 |
| Sparebank 1 Regnskapshuset Valhall AS | Professional & scientific | 1998 |
| Sport 1 Nesbyen AS | Wholesale & retail | 2023 |
| Stasjonsvegen 5 AS | Real estate | 2023 |
| Steinar Og Sigrun Tangen Ans | | 1989 |
| Stilag Nesbyen AS | Arts & recreation | 2025 |
| Storevarde AS | Professional & scientific | 2021 |
| Strendo Maskinteknikk AS | Manufacturing | 2022 |
| Stuveseth Farge & Interiør AS | Wholesale & retail | 2012 |
| Ståle Onsgård Sagabråten AS | Health & social care | 2021 |
| Sundbolien Drift AS | Construction | 2020 |
| Sundsdal AS | Professional & scientific | 2026 |
| Sutøya Feriepark AS | Hospitality | 1996 |
| Sutøya Holding AS | Hospitality | 2017 |
| Synstevassåsen AS | Real estate | 2018 |
| Synstevassåsen Vann Og Avløp AS | Water & waste | 2018 |
| Søbstad Elektroengineering AS | Construction | 2000 |
| Sørnes Innovasjon AS | Manufacturing | 2022 |
| Ta Handel AS | Wholesale & retail | 2026 |
| Takstklar AS | Real estate | 2020 |
| Teta Bygg AS | Construction | 2025 |
| Thermopipe Insulation Products AS | Wholesale & retail | 2014 |
| Thorart - Thorkildsen Kunsformidling AS | Education | 2022 |
| Tiver AS | Professional & scientific | 2020 |
| TL Maskin Og Landbruk AS | Construction | 2023 |
| TNN Invest AS | Financial services | 2019 |
| To & Ro Eiendom Da | Construction | 2007 |
| Todølavegen SA | Real estate | 2019 |
| Tollefsen Tak AS | Construction | 2024 |
| Tony Giacomello Holding AS | | 2025 |
| Tore Blyverket AS | Transport & logistics | 2026 |
| Tragethon Invest 2 AS | | 2017 |
| Trailhead Nesbyen AS | Arts & recreation | 2014 |
| Treform AS | Professional & scientific | 2025 |
| Trollhyttene AS | Real estate | 1987 |
| Trollset Eiendom AS | Real estate | 2004 |
| Trollset Va-Drift AS | Water & waste | 2018 |
| Trollsetutsikten AS | Real estate | 2017 |
| Trondrud Holding AS | Real estate | 2017 |
| Trondrudmarka Fjelltomter AS | Real estate | 2017 |
| Trondrudmarka Vegsamvirke SA | Real estate | 1993 |
| Truls Tørrisplass AS | Construction | 2006 |
| TS Bygg & Membran AS | Construction | 2001 |
| Tunhovd Sanke Og Beitelag SA | Agriculture & fishing | 2003 |
| TVB Eiendom AS | Construction | 2018 |
| Tverrlia Va-Drift AS | Water & waste | 2015 |
| Tøllemovegen AS | Real estate | 2021 |
| Uniskog AS | Professional & scientific | 2019 |
| Uppå Lysern AS | Real estate | 2019 |
| Valdresbråten Da | Construction | 2007 |
| Vassfarsameiets Jakteierlag SA | Arts & recreation | 1978 |
| Vebjørn O Haraldseth Skogstjenester AS | Agriculture & fishing | 2005 |
| Vega Havhytter AS | Real estate | 2017 |
| Vegard Botnen AS | Information & communication | 2019 |
| Vegen Langebakk-Myte SA | Real estate | 1972 |
| Vegen Langevasskrysset-Buvatn SA | Real estate | 2020 |
| Venehalle AS | Real estate | 1994 |
| Vestheim Eiendomsutvikling AS | Real estate | 2005 |
| Vikenapotekene AS | Wholesale & retail | 2014 |
| Volanpar AS | Information & communication | 2020 |