| Lysingmo Fellesbeite SA | Agriculture & fishing | 2022 |
| M.O.M. Holding AS | | 2025 |
| Mangsla AS | Information & communication | 2021 |
| Marjo Eiendom AS | Real estate | 2026 |
| Mathåndverker,N AS | Administrative & support | 2011 |
| Matria Nova AS | Professional & scientific | 2024 |
| MB Maskin Orkland AS | Administrative & support | 2022 |
| Megarden Østre AS | Arts & recreation | 2024 |
| Megarsekra Utbygging AS | Real estate | 2022 |
| Melby Eiendom AS | Real estate | 1980 |
| Meåsvegen 6 AS | Real estate | 2020 |
| Midtnorsk Opplæring AS | Education | 1997 |
| Miljøstein AS | Wholesale & retail | 2016 |
| Mjovassveien SA | Real estate | 1964 |
| Mo Marked Holding AS | Financial services | 2005 |
| Mo Prosjekt AS | Real estate | 1955 |
| Moldbakkvegen Skogsvegforening | Real estate | 1995 |
| Mostad Antonsen Holding AS | Wholesale & retail | 2020 |
| Munthergolf AS | Arts & recreation | 2025 |
| Mælen Eiendom AS | Real estate | 2021 |
| Mælen Maskin AS | Construction | 2017 |
| Naboen Restaurant AS | Hospitality | 2018 |
| Navarhaugen Konsulenttjenester AS | Professional & scientific | 2023 |
| Nils Arne Eggen Arena AS | Real estate | 2023 |
| Nord Cargo AS | Transport & logistics | 2026 |
| Nordic Quarry Solutions AS | Wholesale & retail | 2012 |
| Nordlian Nisser Og Troll Da | Arts & recreation | 2000 |
| Norkosmetisk AS | Wholesale & retail | 2026 |
| Nye Kjeveortoped Rao AS | Health & social care | 2026 |
| Nyhushaugen AS | | 2023 |
| Nøsen & Co AS | Wholesale & retail | 2009 |
| O O Digerås Eftf AS | Wholesale & retail | 1985 |
| Oddli Utstyr Og Service Da | Wholesale & retail | 2006 |
| Ola Eikli AS | Agriculture & fishing | 2022 |
| Omnfjell Grunneierlag SA | Agriculture & fishing | 2023 |
| Oppigard Samdrift Da | Agriculture & fishing | 2002 |
| Optimal Holding AS | | 2017 |
| Orkdal Elektro AS | Construction | 2018 |
| Orkdal Regnskapskontor SA | Professional & scientific | 2001 |
| Orkdal Skrift- Og Steinhuggeri AS | Manufacturing | 2022 |
| Orkdal Varme Og Sanitær AS | Construction | 1998 |
| Orkdalsvegen 582 AS | Real estate | 2018 |
| Orkdalsveien 50 AS | Real estate | 2016 |
| Orkel AS | Manufacturing | 2002 |
| Orkel Direkte AS | Manufacturing | 1989 |
| Orkel Holding AS | Manufacturing | 2015 |
| Orkla Bygdeservice SA | Administrative & support | 2000 |
| Orkla Data Ans | Wholesale & retail | 1990 |
| Orkla Digital Ans | Information & communication | 1998 |
| Orkla Grube AS | Mining & quarrying | 2007 |
| Orkla Kornsilo Og Mølne SA | Manufacturing | 1952 |
| Orkla Stein AS | Mining & quarrying | 2020 |
| Orkland Eiendom AS | Construction | 2019 |
| Orkland Energi Produksjon AS | Energy | 2016 |
| Orkland Energi Varme AS | Energy | 2000 |
| Orkland Gravferd AS | Other services | 2017 |
| Orkland Holding AS | Construction | 2019 |
| Orkland Invest AS | Information & communication | 2018 |
| Orkland Trafikkskole AS | Education | 2017 |
| Penn & Papir AS | Arts & recreation | 2018 |
| Protek Service AS | Administrative & support | 2012 |
| R W Sollinger Hütte GmbH | Construction | 2012 |
| Real Estate Norge AS | Real estate | 2022 |
| Real Regnskap AS | Professional & scientific | 2025 |
| Reinhekla AS | Arts & recreation | 2011 |
| Ricso AS | Other services | 2008 |
| Rislia Utvikling AS | Real estate | 2021 |
| Roger Graff Holding AS | Construction | 2008 |
| Row Eiendom AS | Real estate | 2018 |
| Ruto Holding AS | Construction | 2024 |
| Ruto Klima AS | Construction | 2024 |
| Rønning Bil AS | Transport & logistics | 2015 |
| Rønning Industri & Landbruksservice | Manufacturing | 2012 |
| S Solem AS | Wholesale & retail | 2020 |
| S Solem Kapital AS | Transport & logistics | 1986 |
| S-Snøsen AS | Administrative & support | 2021 |
| Saulius Lapinskas Ortopedi AS | Health & social care | 2023 |
| Selbæk Maskin AS | Construction | 2019 |
| Siva Fannrem Eiendom AS | Real estate | 1979 |
| Slettås AS | Wholesale & retail | 2015 |
| Slettås Holding AS | | 2024 |
| Slupphaug Eiendom AS | Real estate | 2026 |
| Slupphaug Holding AS | | 2026 |
| Snildalsli Maskin AS | Construction | 2024 |
| Solem Tekniske AS | Construction | 2026 |
| Songli Eiendom AS | Arts & recreation | 2017 |
| Songmoen Samdrift Da | Agriculture & fishing | 2002 |
| Spinnler Flyfishing AS | Arts & recreation | 2020 |
| Sportsvåpen AS | Wholesale & retail | 2012 |
| Steinli Grus AS | Mining & quarrying | 2018 |
| Steinshaug Maskin AS | Construction | 2025 |
| Steinshaug Stall Og Travtrening Ans | Agriculture & fishing | 2003 |
| Steinshaug Transport AS | Transport & logistics | 2015 |
| Stian K Holding AS | | 2021 |
| Strå Interiør AS | Wholesale & retail | 2022 |
| Stuggudalstjønnin, Hoston Og Ringavatnet Fiskelag SA | Arts & recreation | 2024 |
| Ståle Kirkaune AS | Construction | 2014 |
| Subsea & Oilfield Services International AS | Professional & scientific | 2024 |
| Sundlikraft AS | Energy | 2009 |
| Sutra Hoston AS | Transport & logistics | 1992 |