| Malerteam Moan & Eriksen AS | Construction | 2020 |
| Mare Invest AS | Financial services | 2005 |
| Marka Finans AS | Professional & scientific | 2012 |
| Maskin Og Grunnarbeid AS | Construction | 2008 |
| Mediasirkelen AS | Professional & scientific | 2024 |
| Mega Norge AS | Wholesale & retail | 2010 |
| Mer Treningssenter Flatåsen AS | Arts & recreation | 2025 |
| Midt-Norsk Tak Og Fasadevask AS | Administrative & support | 2024 |
| Midt-Norsk Vask AS | Administrative & support | 2016 |
| Mimir Holding AS | Professional & scientific | 2021 |
| Mimir Technologies AS | Information & communication | 2021 |
| Min Salong AS | Other services | 2015 |
| Moen 5 AS | Real estate | 2019 |
| Moen Marketing AS | Professional & scientific | 1994 |
| Morgengry AS | Real estate | 2022 |
| Mptek AS | Manufacturing | 2023 |
| Naustanvegen AS | Real estate | 2009 |
| Nicholas 07 AS | Financial services | 2015 |
| Nintendo Utleiern Ans | | 1992 |
| Nordiq Consulting AS | Professional & scientific | 2023 |
| Nordstudio AS | Information & communication | 2023 |
| Norsk Gardsmeny AS | Manufacturing | 2018 |
| Nosa Invest AS | | 2023 |
| Noxproductions AS | Information & communication | 2024 |
| Nidelven Grammofon AS | Manufacturing | 1988 |
| Odd Forseth Eiendom AS | Real estate | 1974 |
| Ofe Eiendom AS | Real estate | 2022 |
| Okken O. Bay AS | Wholesale & retail | 2019 |
| Olli Holding AS | | 2020 |
| Onshus Bygg AS | Construction | 2023 |
| Opheim Audio AS | Information & communication | 2026 |
| Optimec AS | Wholesale & retail | 2024 |
| Orkdalsveien 88 AS | Real estate | 2017 |
| Panorama Solution AS | Professional & scientific | 2015 |
| Perado Invest AS | | 2020 |
| Pixel Holding AS | | 2025 |
| PNN Holding AS | Real estate | 2021 |
| Portleverandøren AS | Wholesale & retail | 2014 |
| Portleverandøren Holding AS | Wholesale & retail | 2022 |
| Premi Toys Da | Wholesale & retail | 2021 |
| Profilbygg Trondheim AS | Construction | 2006 |
| Pure Holding AS | Wholesale & retail | 2005 |
| Pure Medical AS | Wholesale & retail | 1993 |
| R Granbo Invest AS | Administrative & support | 2017 |
| R. Storm Holding AS | Real estate | 2007 |
| Rachel Hauan AS | Wholesale & retail | 2009 |
| Radical Technologies AS | Professional & scientific | 2023 |
| Rafiki AS | Real estate | 2005 |
| Rektek AS | Wholesale & retail | 2021 |
| Reverud Invest AS | | 2021 |
| Rhsholding AS | Financial services | 2018 |
| Rosten Bilverksted AS | Other services | 1992 |
| Rotvik Group AS | | 2025 |
| Ruta AS | Real estate | 2008 |
| Ruta Byggfornyelse AS | Real estate | 2024 |
| Ruta Eiendom AS | Real estate | 2013 |
| Ruta Entreprenør AS | Construction | 2001 |
| Ruta Gutta AS | Real estate | 2013 |
| Ruta Invest 2 AS | Real estate | 2019 |
| Ruta Invest AS | Real estate | 2020 |
| Rypdal Invest AS | Professional & scientific | 2016 |
| Salong Karma AS | Other services | 1996 |
| Sanremo Restaurant AS | Hospitality | 2005 |
| Seichel AS | Information & communication | 2014 |
| Selama Invest AS | | 2020 |
| Skolmli Holding AS | Real estate | 2024 |
| SM Minde Holding AS | | 2025 |
| SMN Holding AS | Information & communication | 2005 |
| Sparke.No AS | Wholesale & retail | 2020 |
| Splitlift AS | Professional & scientific | 2018 |
| Stortiset Consulting AS | Information & communication | 2022 |
| Stortiset Holding AS | Information & communication | 2015 |
| Stødig Murmester AS | Construction | 2025 |
| Sunnlandsskrenten AS | Real estate | 2018 |
| Systua Heimdal AS | Manufacturing | 1994 |
| Søbstadvegen 19A AS | Real estate | 2020 |
| Taskly AS | Construction | 2025 |
| Tasseladden AS | Wholesale & retail | 2024 |
| Tempero Invest AS | Professional & scientific | 2005 |
| Tgen AS | Real estate | 2021 |
| The Project AS | Other services | 2026 |
| Tikke Mot Helg AS | Real estate | 2026 |
| TLS Media Da | Professional & scientific | 2024 |
| Tom Erik Eriksen Holding AS | | 2021 |
| Toolmax AS | Wholesale & retail | 2015 |
| Torsnos AS | Financial services | 2008 |
| Treff Trøndelag AS | Administrative & support | 2022 |
| Trondheim El AS | Construction | 2015 |
| Trondheim Hudpleie AS | Other services | 2023 |
| Trondheim Renholdsservice AS | Administrative & support | 2021 |
| Trondheim Spa AS | Other services | 2021 |
| Trondheim VVS AS | Construction | 2025 |
| Ulsmågveien 29B AS | Real estate | 1990 |
| Vec AS | Information & communication | 2019 |
| Vedersø Eiendom AS | Real estate | 2024 |
| Vedersø Holding AS | Real estate | 2023 |
| Vienberg Holding AS | Financial services | 2005 |
| Vikan Bygg AS | Construction | 2023 |
| Vitom Da | Arts & recreation | 2012 |
| Vuur AS | Professional & scientific | 2024 |