| Myra Eiendom AS | Real estate | 2002 |
| N'Age Aps | Other services | 2023 |
| Nanostone AS | Administrative & support | 2026 |
| Nettkonsepter AS | Information & communication | 2002 |
| NM Consult AS | Professional & scientific | 2021 |
| NM Eiendomsinvest AS | Real estate | 2026 |
| Norakom AS | Real estate | 2006 |
| Nord Kopland Samdrift Da | Agriculture & fishing | 2006 |
| Nordbråten Skog Da | Agriculture & fishing | 2004 |
| Nordre Sandaker Holding AS | Financial services | 2017 |
| Nordstrand Skog Da | | 2026 |
| Norsk Personalpleie Mauseth AS | Other services | 2019 |
| Norwegian Export Import AS | Wholesale & retail | 1994 |
| Noso AS | Real estate | 2018 |
| Noso Eiendom AS | Real estate | 2023 |
| Nybrua Vertshus AS | Hospitality | 2024 |
| Nygård Bil AS | Wholesale & retail | 1997 |
| Nygård Bil Og Eiendom AS | Wholesale & retail | 2005 |
| Nygård Sport AS | Wholesale & retail | 1990 |
| Nyhus Gård Ans | Agriculture & fishing | 2019 |
| Nymoen Vannverk Ba | Water & waste | 1958 |
| Ocd Holding AS | Wholesale & retail | 2025 |
| Ocm Consultants AS | Professional & scientific | 2012 |
| Ocm Eiendomsutvikling AS | Real estate | 2012 |
| Off the Grid AS | Wholesale & retail | 2016 |
| Ojs Invest AS | Wholesale & retail | 2009 |
| Ole Johnny Sundet Holding AS | | 2025 |
| Omd Prosjekt AS | Professional & scientific | 2014 |
| Optiker'N Åmot Eiendom AS | Real estate | 2016 |
| Optikern Åmot AS | Wholesale & retail | 2020 |
| Overnklinikken AS | Health & social care | 2009 |
| Pandur AS | Real estate | 2010 |
| Paradiso Pizza & Grill AS | Hospitality | 2016 |
| PCT AS | Construction | 2012 |
| Per Ole Buxrud AS | Financial services | 1993 |
| Pind AS | Manufacturing | 2023 |
| Proventiv AS | Professional & scientific | 2026 |
| PT Elektro AS | Construction | 2012 |
| Ramstad Eiendom AS | Real estate | 2000 |
| Re Blikk AS | Construction | 2022 |
| Relynwa AS | | 2007 |
| Renda AS | Construction | 2023 |
| Rent & Pent Modum AS | Administrative & support | 2023 |
| Reprogården AS | Real estate | 2010 |
| RJ Bygg AS | Construction | 2024 |
| Roan Eiendom AS | Real estate | 2021 |
| Ronny Haugen AS | Construction | 2021 |
| RRK AS | | 2021 |
| Ruggen AS | | 2019 |
| Rune Borgersen Maskin AS | Construction | 2025 |
| Rune Flintegård AS | Construction | 2021 |
| Rura Da | Wholesale & retail | 2025 |
| Röhlig AS | Professional & scientific | 2023 |
| S 3 Eiendom AS | Real estate | 2010 |
| S B Tjenester AS | Transport & logistics | 2024 |
| Saga Eiendom AS | Real estate | 1981 |
| Sagstranda Utvikling AS | Real estate | 2019 |
| Salf Invest AS | | 2021 |
| Salong Stine AS | Other services | 2013 |
| Sandø Bil AS | Wholesale & retail | 2024 |
| Sebraa AS | Professional & scientific | 2023 |
| Senter Bygg AS | Transport & logistics | 2005 |
| Sigdal Blikk & Tak AS | Construction | 2011 |
| Sigdal Maskin AS | Construction | 1974 |
| Silkeborgvej-Tech | Wholesale & retail | 2024 |
| Simostranda Stav Og Laft AS | Construction | 2004 |
| Skaham Invest AS | Real estate | 2005 |
| Skibrekk Holding AS | Manufacturing | 2022 |
| Skogli Skog Da | Agriculture & fishing | 2009 |
| Skogly Blikk Og Tak AS | Construction | 2019 |
| Skuterud Renhold AS | Administrative & support | 1991 |
| Sletta Forretningsgård Da | Real estate | 2009 |
| Smag Tjeneste AS | Construction | 2013 |
| Solheim Automobil AS | Wholesale & retail | 2025 |
| Solheim Containerhandel AS | Wholesale & retail | 2025 |
| Solstua Rønning Og Søderlind Ans | Arts & recreation | 1994 |
| Splitkon AS | Manufacturing | 2010 |
| ST 1 Holding AS | Construction | 2020 |
| Steinroa Nord Vei AS | Real estate | 2024 |
| Stemst AS | Real estate | 2014 |
| Stijn Adriaanse AS | Wholesale & retail | 2026 |
| Storgata 24 AS | Real estate | 1972 |
| Strømberg Blikk & Skifertak AS | Construction | 2020 |
| Strømsø Boligutvikling AS | Real estate | 2024 |
| Studio W AS | Other services | 2016 |
| Støvern Invest AS | | 2021 |
| Støvern Maskin AS | Construction | 2013 |
| Sundbyfoss Utsiktstomter AS | Real estate | 2023 |
| Sveaas-Braathen Og Sveaas Da | Agriculture & fishing | 2013 |
| Svein H Kvia AS | Construction | 2021 |
| Sveins Malerservice AS | Construction | 2020 |
| Svema Holding AS | Financial services | 2007 |
| Sven Solberg Bygg AS | Professional & scientific | 1998 |
| Svetrans AS | Transport & logistics | 2021 |
| SWS Eiendom AS | Construction | 2013 |
| Synergy Midtfylke Norge AS | Wholesale & retail | 2015 |
| Søndre Nordby Skog Da | Agriculture & fishing | 1995 |
| Sørby Salmakeri Og Utstyr Da | Wholesale & retail | 1994 |
| T&T Lohne Holding AS | Professional & scientific | 2021 |
| T.J Grunnarbeid AS | Construction | 2026 |