| Mobile Furnes AS | Other services | 2001 |
| Momento Film AS | Information & communication | 2012 |
| Morten Skancke AS | Construction | 2000 |
| Mowet AS | Real estate | 2021 |
| Mpack AS | Wholesale & retail | 2011 |
| Mr.La AS | Hospitality | 2022 |
| Multifokus AS | Health & social care | 2016 |
| Må Få Det Gjort AS | Construction | 2024 |
| Møbelringen Hamar AS | Wholesale & retail | 2018 |
| Møller Bil Innlandet AS | Other services | 1996 |
| Nes-Bil AS | Other services | 2017 |
| Nevedyktig AS | Administrative & support | 2013 |
| Nevo Tak Og Eiendom AS | Construction | 2020 |
| Nielsen Trafikkskole AS | Education | 2025 |
| No Loose Ends AS | Administrative & support | 2025 |
| Nor-Den Eiendom AS | Real estate | 2017 |
| Nordic Construction AS | Construction | 2025 |
| NS Eiendomsservice AS | Administrative & support | 2026 |
| Nydal 2 AS | Real estate | 2022 |
| Nydal Fysioterapi Og Helse AS | Health & social care | 2013 |
| Nydalen Holding AS | Real estate | 2018 |
| Nye Kafé Koigen AS | Hospitality | 2023 |
| Nytebo AS | Real estate | 1996 |
| Næring Og Boligeiendom AS | Real estate | 2017 |
| O K Kompressorservice AS | Wholesale & retail | 1987 |
| Odd Magne Stensby AS | Wholesale & retail | 2026 |
| Olaola AS | Professional & scientific | 2015 |
| Olav Heggelund Invest AS | | 2019 |
| Ole Mekk AS | Administrative & support | 2016 |
| Ophus Holding AS | Construction | 2025 |
| Opp & Fram AS | Financial services | 2013 |
| Opplæringskontoret for Transport- Og Logistikkfag I Hedmark SA | Education | 1995 |
| Oq Holding AS | Real estate | 2018 |
| Oq Invest 2 AS | | 2022 |
| Oq Invest AS | Real estate | 2008 |
| Ottestad Autolakk AS | Other services | 1999 |
| Outsider AS | Professional & scientific | 2018 |
| Peco Eiendomsråd AS | Real estate | 2013 |
| Plotz AS | Information & communication | 2013 |
| Prestmosvegen 6 AS | Real estate | 2016 |
| PS Nymalt AS | Real estate | 2012 |
| Qvale AS | Real estate | 2009 |
| R Nordli Interiør AS | Wholesale & retail | 1990 |
| R-Holding AS | | 2012 |
| R.H. Transport AS | Transport & logistics | 2019 |
| Re Bygg Innlandet AS | Construction | 2012 |
| Re Eiendom Innlandet AS | Real estate | 2021 |
| Reelektro AS | Wholesale & retail | 2014 |
| Rerum Holding AS | Real estate | 2016 |
| Resport Og Fritid AS | Wholesale & retail | 2020 |
| Riggområde Stange Af Ans | Construction | 2025 |
| Romnes Hamar AS | Wholesale & retail | 1987 |
| Rono Invest AS | Real estate | 2001 |
| RP Kjøkken Innlandet AS | Wholesale & retail | 2024 |
| Rss-Holding AS | Professional & scientific | 2021 |
| Ruda Holding AS | | 2022 |
| Rørleggermester Ophus AS | Construction | 2025 |
| S Bygg & Anlegg AS | Construction | 2021 |
| S Pedersen Holding AS | | 2021 |
| Saga Eiendom AS | Real estate | 1989 |
| Salutis HMS AS | Health & social care | 2016 |
| Salutis Psykologi AS | Health & social care | 2017 |
| Salutis Solutions AS | Professional & scientific | 2020 |
| Sameiet Buzios Paradise | | 2009 |
| Sandbox Playhouse Da | Information & communication | 2023 |
| Schmidt Kjøkken Hamar AS | Wholesale & retail | 2022 |
| Scientia Forlag AS | Information & communication | 2018 |
| Seberg Holding AS | Real estate | 2014 |
| Septer AS | Professional & scientific | 2018 |
| Servicetjenester Innlandet AS | Construction | 2014 |
| SFR Invest AS | | 2019 |
| Shvo Holding AS | Wholesale & retail | 2023 |
| Sig-Ma Invest AS | Construction | 2010 |
| Simonsen Lasergravering Da | Manufacturing | 2014 |
| Sin Bygg Group AS | Construction | 2022 |
| Sirkula Næring AS | Real estate | 2003 |
| SM Entreprenør AS | Construction | 2015 |
| Smart Repair Bilpleie AS | Other services | 2012 |
| Smarte Boliger AS | Real estate | 2014 |
| Solfin AS | | 2025 |
| Solid Byggtjenester AS | Construction | 2022 |
| SPS Hagemaskiner AS | Wholesale & retail | 2012 |
| Stabburstunet Lokalutleie AS | Real estate | 2024 |
| Stavsberg Barnehage SA | Education | 1994 |
| Stendahl Holding AS | Real estate | 2013 |
| Stensby Holding AS | Real estate | 2022 |
| Stig Rune Larsen Invest | | 2016 |
| Storsveen Holding AS | Financial services | 2017 |
| Strandvik Transportservice AS | Manufacturing | 2021 |
| Strom Invest AS | | 2021 |
| Svensen Bygg & Utleie AS | Construction | 2022 |
| Sæming Myhre Trading AS | Real estate | 2003 |
| T1MOTOR AS | Other services | 2017 |
| Tavlebyggeren Hamar AS | Manufacturing | 2001 |
| Tekstur Olrud AS | Other services | 2010 |
| Tem Anleggsservice AS | Construction | 2012 |
| TH. Johansen & Sønner AS | Construction | 1984 |
| To Eiendom AS | Real estate | 1998 |
| Tobben Mærde Holding AS | Financial services | 2014 |
| TR Utvikling Da | Education | 2008 |