| Messel Holding AS | Real estate | 2022 |
| Midtre Olimb Gårdsopplevelser Ans | Agriculture & fishing | 1998 |
| Milnor AS | Professional & scientific | 2008 |
| Minibrukt AS | Wholesale & retail | 2023 |
| Miniverden AS | Wholesale & retail | 2018 |
| Mobit AS | Wholesale & retail | 1993 |
| Modul Leverandøren AS | Administrative & support | 2024 |
| Mogop Invest AS | Real estate | 2005 |
| Morten Haugli Eiendom AS | Real estate | 2002 |
| Mstyling AS | Wholesale & retail | 2024 |
| Multimaskiner AS | Administrative & support | 2026 |
| Murmester Torkild Erlandsen AS | Construction | 2012 |
| Musmyrveien 37 AS | Real estate | 2018 |
| Musmyrveien 4 AS | Real estate | 2026 |
| Myhre Brønn Og Energiboring AS | Construction | 2019 |
| Myhre Management AS | Education | 2026 |
| Mylucy AS | Wholesale & retail | 2015 |
| Myrvoll Holding AS | Financial services | 2008 |
| Mårstubben 4 AS | Professional & scientific | 2022 |
| Møller Undenas Turbin AB | | 1997 |
| Naf Holding AS | | 2026 |
| Nefjen Holding AS | Construction | 2024 |
| Negler Perfect Beauty AS | Other services | 2024 |
| Neslo Consult AS | Professional & scientific | 2004 |
| Neslo Invest AS | Administrative & support | 2002 |
| Nettpilot AS | Information & communication | 2024 |
| Nina Olsvik AS | Wholesale & retail | 2021 |
| Njordur AS | Professional & scientific | 2016 |
| Nordby Gardsbarnehage AS | Education | 2022 |
| Norhed Eiendom Jevnaker AS | Real estate | 2013 |
| Norma Geosystems AS | Professional & scientific | 2020 |
| Nviro AS | Wholesale & retail | 1988 |
| Nygård Bad AS | Construction | 2026 |
| Nygård Mur Og Tre Da | Construction | 2007 |
| Nytt Lager AS | Construction | 2020 |
| Næsset Eiendom AS | Real estate | 1991 |
| Næsset Mek. Verksted AS | Manufacturing | 2007 |
| Oppgrader AS | Administrative & support | 2011 |
| Ortimi Invest AS | | 2022 |
| Orvang Utleie- & Vedlikehold Service AS | Real estate | 2020 |
| PCB Connect AS | Wholesale & retail | 2008 |
| Playground Capital AS | Professional & scientific | 2006 |
| Por Eiendom AS | | 2017 |
| Promontasje AS | Construction | 2021 |
| Pu Consult Ltd Nuf | Construction | 2023 |
| Raade Eiendom AS | Real estate | 2013 |
| Randsfjord Eiendom AS | Real estate | 1998 |
| Randsfjord Rør Eiendom AS | Real estate | 2013 |
| Randsfjorden Brygge AS | Hospitality | 2015 |
| Relaxity AS | Administrative & support | 2025 |
| Ren Konstruksjon AS | Professional & scientific | 2023 |
| Revisorhuset JB AS | | 2026 |
| Revisorhuset Re AS | | 2026 |
| Ringerike & Hadeland Betongsaging AS | Construction | 2014 |
| Ronny Johnsen AS | Financial services | 2017 |
| Rundhaug Malerservice Da | Construction | 1998 |
| S K Consult AS | Construction | 2004 |
| S22 Eiendom AS | Real estate | 2023 |
| S22 Holding AS | Real estate | 2018 |
| Salong Liss AS | Other services | 2019 |
| Saltex AS | Wholesale & retail | 2021 |
| Samboline Invest AS | Real estate | 1995 |
| Sannes & Ødegaards Univers AS | Information & communication | 2009 |
| Schia Invest AS | Wholesale & retail | 2023 |
| Seb Aktiv AS | Financial services | 2016 |
| Sera Invest AS | Financial services | 2011 |
| Setra Eie AS | Information & communication | 2019 |
| Silent Wings AS | Information & communication | 2004 |
| Skaug Gård AS | Agriculture & fishing | 2026 |
| Skonnord Eiendom AS | Real estate | 2011 |
| Slette's Lyd & Bil AS | Wholesale & retail | 2021 |
| Sløvika Karosseri Nuf | Wholesale & retail | 2007 |
| Sløvika Kiosk Ans | Wholesale & retail | 1997 |
| Sofija AS | Wholesale & retail | 2024 |
| Solbakken Øvre Vang AS | Real estate | 2016 |
| Speilfjord AS | Hospitality | 2025 |
| Spektakulær Invest AS | Manufacturing | 2020 |
| Stave Ledelse Og Utvikling AS | Professional & scientific | 2017 |
| Stech AS | Manufacturing | 2021 |
| Storgata 9 Landhandleri Og Delikatesse AS | Wholesale & retail | 2012 |
| Storgata Optiske A/S | Wholesale & retail | 2013 |
| Stortjernet Barnehage AS | Education | 2005 |
| Svajus Bygg AS | Construction | 2023 |
| Svermo AS | Manufacturing | 2005 |
| Svermo Eiendom AS | Manufacturing | 2011 |
| Swurg AS | | 2026 |
| System Design AS | Information & communication | 1987 |
| T. Erlandsen Eiendom AS | Real estate | 2012 |
| Takstmann Olav Larsplass AS | Real estate | 2021 |
| Tangen Eiendom Ans | Real estate | 1999 |
| Tannlegene Lynne Og Arnesen AS | Health & social care | 2023 |
| TB Motorsport AS | Wholesale & retail | 2019 |
| Tdih Holding AS | | 2025 |
| Tea & Sønn Eiendom AS | Real estate | 2019 |
| Tea & Sønn Holding AS | Real estate | 1998 |
| Team Eplehagen AS | Health & social care | 2018 |
| Teknisk Service & Assistanse AS | Construction | 2024 |
| Tero Eiendom AS | Construction | 2005 |
| Themitech AS | Manufacturing | 2025 |
| Thorbjørnrud Hotell AS | Hospitality | 1986 |