| Les Og Lek Bjørkelangen AS | Wholesale & retail | 2006 |
| Les Og Lek Sørumsand AS | Wholesale & retail | 2011 |
| LH Elektro AS | Construction | 2020 |
| Linnestad Holding AS | Real estate | 2020 |
| Lions Holdings AS | | 2026 |
| Liten Treverden AS | Administrative & support | 2017 |
| Litzheim Bygg Og Eiendom AS | Real estate | 2014 |
| Litzheim Holding AS | Construction | 2018 |
| Ludus AS | Real estate | 2005 |
| Lundsfoss Kraftstasjon AS | Energy | 1990 |
| Løken Utvikling AS | Real estate | 2024 |
| Løkenåsen Panorama AS | Construction | 2015 |
| Løkenåsen Panorama Holding AS | Real estate | 2026 |
| M. Nordby Invest AS | | 2023 |
| Malermester Merli AS | Construction | 2019 |
| Mallorcatour.No AS | Administrative & support | 2016 |
| Malta Capital AS | | 2026 |
| Martin Vestreng Holding AS | Real estate | 2020 |
| MBT Holding AS | Real estate | 2022 |
| Mdhn AS | Financial services | 2022 |
| Meifas Elektro AS | Construction | 2019 |
| Metal Og Stål Prosjekter Da | Manufacturing | 1995 |
| Miljø Sekken AS | Water & waste | 2025 |
| Mio Trend AS | Wholesale & retail | 2010 |
| Mjermen Hyttepark AS | Real estate | 2020 |
| Mjåland AS | Administrative & support | 2017 |
| Morgenliveien 13 AS | Real estate | 2020 |
| Moseby Gård Da | Agriculture & fishing | 2025 |
| Motor Line AS | Real estate | 1994 |
| Msst Andreas Flegel AS | Construction | 2024 |
| MST Bygg Og Utleie AS | | 2026 |
| MT Cabins AS | Professional & scientific | 2022 |
| My Transport AS | Transport & logistics | 2023 |
| NB Trafikkskole AS | Education | 2012 |
| Needly Holding AS | | 2020 |
| NHM AS | Administrative & support | 2015 |
| NHM Bane AS | Construction | 2018 |
| Nlytics AS | Information & communication | 2025 |
| NM Bygg AS | Administrative & support | 2012 |
| NMN Holding AS | Manufacturing | 2023 |
| Noa Eiendom AS | Real estate | 2017 |
| Nordcon Energy AS | Wholesale & retail | 2015 |
| Nordic Taxi AS | Transport & logistics | 2026 |
| Nordre Bliksrudvei Eiendom AS | Real estate | 2023 |
| Normjå Skog AS | Agriculture & fishing | 2020 |
| Norsk Murerservice AS | Construction | 2019 |
| Notax AS | Transport & logistics | 2026 |
| Nova Invest Og Eiendom AS | Real estate | 2017 |
| Nova Klinikken AS | Real estate | 2015 |
| Nova Mont AS | Construction | 2021 |
| Nye Bjørkelangen Sport Eiendom AS | Real estate | 2018 |
| Næringseiendom Østlandet AS | Real estate | 1994 |
| Næss Anlegg Og Utemiljø AS | Construction | 2019 |
| Odd-Erik Westreng AS | | 2020 |
| Olavatech AS | Information & communication | 2025 |
| On Air Media AS | Information & communication | 2019 |
| On Bolig AS | Real estate | 2026 |
| On Byggservice AS | Construction | 2024 |
| Opptjern Vannverk SA | Water & waste | 1960 |
| Orre Bil AS | Wholesale & retail | 2011 |
| Ovf Holding AS | | 2025 |
| P&A Bhardwaj AS | Transport & logistics | 2025 |
| P.O. Bygg AS | Construction | 2020 |
| Parkaden Bjørkelangen AS | Real estate | 2004 |
| PB Hage Stein & Flis AS | Administrative & support | 2017 |
| Pengesekken Holding AS | Construction | 2023 |
| Per Haneborg AS | Transport & logistics | 2022 |
| Per Nordby Holding AS | | 2005 |
| Performance Agency AS | Information & communication | 2008 |
| PG Bygg AS | Construction | 2017 |
| Pia Kafe Og Spiseri AS | Hospitality | 2024 |
| Pioner Boat AS | Manufacturing | 2006 |
| Pitstop Kebab & Burger House AS | Hospitality | 2023 |
| Plaza Bygg Ans | Construction | 2011 |
| Plåt Och Ventilationsgrossisten AB | Construction | 1996 |
| Potere AS | | 2023 |
| PP Bygg Og Eiendom AS | Real estate | 2011 |
| Probygg Og Bad AS | Construction | 2026 |
| Quality Products & Services AS | Construction | 2001 |
| Ragg Eiendom AS | Real estate | 2012 |
| Ransberg AS | Real estate | 2017 |
| Redem AS | Construction | 2023 |
| Rein Tek AS | Administrative & support | 2008 |
| Reklame Garasjen AS | Construction | 2017 |
| Rescue-Med Undervisning AS | Education | 2022 |
| Restaurant Service AS | Hospitality | 2023 |
| Rikke Eiendom AS | Real estate | 2021 |
| Romerike Boligmiljø AS | Real estate | 2007 |
| Romerike Vedlikeholdstjenester AS | Administrative & support | 2018 |
| RPS Varme Og Bad AS | Construction | 2025 |
| Rubaer Holding AS | | 2023 |
| Rutter Transport AS | Administrative & support | 2020 |
| Rådhusveien 2C AS | Real estate | 2020 |
| Rådhusveien 4 AS | Real estate | 2015 |
| Rådhusveien 5 AS | Real estate | 2004 |
| Rådhusveien 8 AS | Real estate | 2004 |
| Saf Eiendom AS | Construction | 2022 |
| Sandem AS | Other services | 1998 |
| Sandem Eiendomselskap AS | Real estate | 2008 |
| Sanderveien 5 AS | Real estate | 2017 |