| MSC Process AS | Professional & scientific | 2018 |
| Multiklima AS | Construction | 2020 |
| Mur Og Pipeservice AS | Construction | 2002 |
| Mur Og Skifer AS | Construction | 2004 |
| Murmester Karlsen AS | Construction | 2015 |
| Myka-Invest AS | Information & communication | 2022 |
| New Wave Boats AS | Wholesale & retail | 2021 |
| Nina Viland AS | Professional & scientific | 2019 |
| Nordisk Musikkforlag Da | Wholesale & retail | 1998 |
| Nordstø AS | Professional & scientific | 2022 |
| Norenco Holding AS | Wholesale & retail | 2017 |
| Norenco Norge AS | Wholesale & retail | 2020 |
| Norsk Massehåndtering AS | Mining & quarrying | 2021 |
| Norsk Møteforum AS | Administrative & support | 2004 |
| Norsk Prol AS | Wholesale & retail | 1986 |
| Norsk Radiokommunikasjon AS | Wholesale & retail | 1998 |
| Norskauto AS | Wholesale & retail | 2023 |
| Nova North AS | Information & communication | 2017 |
| Nye Olleveien 44 AS | Construction | 2025 |
| Nylenna Holding AS | | 2023 |
| Odd Blix Olsen AS | Construction | 1986 |
| Olaf Lund Blomster Da | Wholesale & retail | 1996 |
| Olympus Holding AS | | 2019 |
| Olympus Solbergelva AS | Arts & recreation | 2022 |
| Omadi Eiendom Ans | Real estate | 2001 |
| Optimumcar AS | Other services | 2024 |
| Osm Bygg AS | Construction | 2020 |
| Oxford Holding AS | | 2026 |
| Palmen AS | Real estate | 1994 |
| Park & Eiendomsdrift AS | Administrative & support | 2022 |
| Pene Tenner AS | Health & social care | 2017 |
| Perander AS | Financial services | 2005 |
| Peto Eiendomsutvikling AS | Real estate | 2016 |
| Pico Bygg AS | Construction | 1996 |
| Pizzadrift Hokksund AS | Hospitality | 2022 |
| Plastmaskiner Thomas Thiis AS | Wholesale & retail | 1967 |
| Plenavita AS | Administrative & support | 2021 |
| Plenavita Ressurs AS | Administrative & support | 2021 |
| Polardrikk Buskerud AS | Wholesale & retail | 2012 |
| Poms AS | Information & communication | 2013 |
| Prege AS | Professional & scientific | 2018 |
| Prege Web AS | Information & communication | 2017 |
| Presto IT AS | Information & communication | 2025 |
| PS Rental AS | Administrative & support | 2025 |
| Pump Supply AS | Wholesale & retail | 2015 |
| Pump Supply Holding AS | Administrative & support | 2025 |
| Pust Invest AS | | 2025 |
| Rambøl Consulting AS | Professional & scientific | 2019 |
| Reir Media AS | Professional & scientific | 2024 |
| Rino Borgersen AS | Construction | 1987 |
| Roomin AS | Real estate | 2024 |
| Rosenvinge Eiendom AS | Real estate | 2017 |
| RT Marketing TH Stavik & Co | Manufacturing | 1981 |
| Rumo Invest AS | Administrative & support | 2020 |
| Rune Temte Ent AS | Arts & recreation | 2025 |
| RVZ Holding AS | Financial services | 2017 |
| Rys Rørlegger AS | Construction | 2018 |
| Rèponse AS | Professional & scientific | 2024 |
| Sample Holding AS | Construction | 2024 |
| Sanido Regnskap AS | Professional & scientific | 2014 |
| Sausenebb AS | Administrative & support | 2023 |
| Sb-Betong AS | | 2009 |
| Scandist AS | Wholesale & retail | 2012 |
| Seamount Holding AS | Real estate | 2016 |
| Sebastian Malerforretning AS | Construction | 2022 |
| Select Elektro AS | Construction | 2022 |
| Serafin Holding AS | Manufacturing | 2015 |
| Serve AS | Wholesale & retail | 1994 |
| Shaughnessy Ahlborg AS | Health & social care | 2019 |
| Sik AS | | 2022 |
| Similia AS | Wholesale & retail | 2005 |
| Sjøbris AS | Water & waste | 2003 |
| SK Norinvest AS | Real estate | 2016 |
| Skaugen Eiendom AS | Real estate | 2019 |
| Skaugen Holding AS | Real estate | 2019 |
| Solberg Express AS | Transport & logistics | 2025 |
| Solberg Legehus AS | Health & social care | 2015 |
| Solberg Sport Og Kultursenter AS | Arts & recreation | 1991 |
| Solberg Sportsklinikk AS | Health & social care | 2022 |
| Solbergelva Apotek AS | Wholesale & retail | 2010 |
| Solbergelva Fysio- Og Manuell Terapi AS | Health & social care | 2016 |
| Solbergelva Optikk AS | Health & social care | 2016 |
| Solbergelva Restaurantdrift AS | Hospitality | 2023 |
| Soot Invest AS | Financial services | 2016 |
| South of Heaven AS | | 2025 |
| SP Kortvedt Invest AS | Information & communication | 2012 |
| Speedy Dawan AS | Transport & logistics | 2025 |
| Stasjonsdrift Khan AS | Wholesale & retail | 2020 |
| Steiner Invest AS | | 2024 |
| Stenmark Management Holding AS | | 2023 |
| Strømgrossisten AS | Wholesale & retail | 2023 |
| Stubberudveien Da | Real estate | 2006 |
| Sun River Utvikling AS | Real estate | 2002 |
| Sustineri AS | | 2022 |
| Synsrådgivning Da | Wholesale & retail | 1999 |
| Systemflyt AS | Information & communication | 2026 |
| Syvaldsen AS | Real estate | 2012 |
| Syvaldsen Eiendomsdrift AS | Administrative & support | 2024 |
| Springer A/S | Manufacturing | 1986 |
| Søtelifjell Vann Og Avløp AS | Water & waste | 2020 |