| Konsultinvest AS | | 1991 |
| Kristian Ørslien AS | Wholesale & retail | 2025 |
| Kvinge Holding AS | | 2012 |
| Lagerparken AS | Real estate | 2022 |
| Larma AS | | 2021 |
| Lars Capital AS | | 2026 |
| Lege Benedicte Seterlund AS | Health & social care | 2019 |
| Leomas AS | Information & communication | 2019 |
| Levering & Montering AS | Transport & logistics | 2020 |
| Lexaklinikken AS | Health & social care | 2017 |
| LH Coaching AS | Education | 2023 |
| Liberati AS | | 2005 |
| Likeaglove Invest AS | Financial services | 2017 |
| Linda C. Karlsen Gynekologi AS | Health & social care | 2026 |
| Lindbergbakken 23 AS | Real estate | 2025 |
| Lindbo AS | Real estate | 2005 |
| Liwe Holding AS | Real estate | 2021 |
| Liwe Utvikling AS | Real estate | 2021 |
| Lupi AS | | 2021 |
| Lødemel Holding AS | | 2026 |
| Løs Investment AS | Financial services | 2013 |
| M-Eiendomsservice AS | Construction | 2023 |
| M-R Drift Og Vedlikehold AS | Administrative & support | 2016 |
| M-R Holding AS | Administrative & support | 2008 |
| M5 Invest AS | Real estate | 2019 |
| Mach AS | Professional & scientific | 2016 |
| Martin Nilsen AS | Professional & scientific | 2018 |
| Mast Kapital AS | | 2025 |
| Meierivegen 3 AS | Real estate | 2022 |
| Mestern Holding AS | Wholesale & retail | 2024 |
| Mickelson Karosseri Ans | Real estate | 1996 |
| Micro Eiendom AS | Real estate | 2021 |
| Min Bolig AS | Construction | 2007 |
| Miniatyrbutikken AS | Wholesale & retail | 2021 |
| Miøsen Elektro AS | Construction | 2021 |
| Mjøsa Økonomi AS | | 2005 |
| Mjøsbetong AS | Manufacturing | 2013 |
| Mjøsen Forvaltning AS | Real estate | 2007 |
| MK Aktiv Holding AS | Financial services | 2016 |
| MKL Holding AS | Construction | 2014 |
| Modell Og Metall AS | Agriculture & fishing | 1966 |
| Move Me AS | Transport & logistics | 2026 |
| MR. Door Holding AS | | 2024 |
| My Bridge AS | Real estate | 2021 |
| Mylius AS | | 2021 |
| Na Investment AS | Real estate | 2019 |
| Navicon AS | | 2026 |
| Navicon Marine AS | Professional & scientific | 2026 |
| Navle Eiendom AS | Real estate | 2021 |
| Netopia Ans | Information & communication | 2007 |
| Nettsmed AS | Information & communication | 2024 |
| NGW Media AS | Professional & scientific | 2021 |
| Noga AS | Agriculture & fishing | 2020 |
| Nordal Renhold AS | Administrative & support | 2018 |
| Norden Byggtjeneste AS | Real estate | 2014 |
| Norsk Hvitløk AS | Agriculture & fishing | 2024 |
| Norsk Teknisk Ortopedi AS | Manufacturing | 1989 |
| Nosi AS | Agriculture & fishing | 1995 |
| Nova Bolig AS | Real estate | 2026 |
| Npe AS | Health & social care | 2013 |
| NPH AS | Health & social care | 2017 |
| Nstravel AS | Transport & logistics | 2024 |
| Nøkleholm Bemanning AS | Agriculture & fishing | 2020 |
| Nøttestadmarka Da | Agriculture & fishing | 2011 |
| O E Invest AS | Financial services | 2005 |
| O.J. Narmo Holding AS | | 2023 |
| Obron Øst AS | Professional & scientific | 2012 |
| Odf Invest AS | Real estate | 2006 |
| Ohs AS | | 2015 |
| Ok Maskinutleie AS | Administrative & support | 2003 |
| Omt Tech AS | Information & communication | 2014 |
| Onesole AS | Wholesale & retail | 2010 |
| Optimal Coaching AS | Education | 2019 |
| Ottestad Bilsenter AS | Other services | 2002 |
| Ottestad Eiendom AS | Real estate | 1991 |
| Ottestad Minilager AS | Administrative & support | 2026 |
| Ottestad Renhold AS | Administrative & support | 2025 |
| Ottestad Rørservice AS | Construction | 2010 |
| Ottestad Samfunnshus SA | Real estate | 1974 |
| Ottestad Treningssenter AS | Arts & recreation | 2020 |
| Ottestadhallen Aktiv AS | Health & social care | 2015 |
| Ozonic AS | Education | 2018 |
| Pa Bygg Og Maskin AS | Transport & logistics | 2017 |
| Pa-Holding AS | Other services | 2021 |
| Paprika Restaurantdrift AS | Hospitality | 2026 |
| PB Invest Hamar AS | Construction | 2005 |
| Pedersenkvartalet AS | Real estate | 2025 |
| Pettersmart Holding AS | | 2026 |
| PGS Bygg AS | Construction | 2004 |
| Poetika AS | Other services | 2015 |
| Polyblock Studio AS | Information & communication | 2018 |
| Postveien Eiendom AS | Real estate | 2004 |
| Prishtina AS | Real estate | 2025 |
| Proklamedia AS | Information & communication | 1984 |
| PSR Helsetjenester AS | Health & social care | 2021 |
| Psykoservice AS | Health & social care | 2016 |
| Qliving AS | Real estate | 2020 |
| Quality Living AS | Real estate | 1988 |
| R.R Bygg AS | Construction | 2019 |
| R.Syversen Holding AS | Real estate | 2022 |