| Moxness-It AS | Information & communication | 2009 |
| Mykvare AS | Information & communication | 2026 |
| Mynextgig AS | | 2024 |
| Naas Eiendom AS | Real estate | 2019 |
| Nap AS | Professional & scientific | 2019 |
| Nedre Bakklandet Eiendom AS | Real estate | 2002 |
| Nekså Consulting AS | Information & communication | 2021 |
| New Norse AS | Professional & scientific | 2005 |
| Nic. Martens Holding AS | Wholesale & retail | 2014 |
| Nidaros Byggkompetanse AS | Professional & scientific | 2017 |
| Nidaros Gruppen AS | Professional & scientific | 2018 |
| Nidaros Hudlegesenter AS | Health & social care | 2026 |
| Nidaros Security AS | Administrative & support | 2016 |
| Nidaros Vip Service AS | Administrative & support | 2023 |
| Njord Marine AS | Real estate | 2024 |
| No Hands AS | Professional & scientific | 2011 |
| Noason Holding AS | Financial services | 2010 |
| Nonnegata 27 AS | Real estate | 2023 |
| Nord Service Group AS | Construction | 2022 |
| Nordenfjeldske Eiendom AS | Real estate | 2023 |
| Nordenfjeldske Holding AS | Real estate | 2023 |
| Nordic Eiendom AS | Real estate | 2024 |
| Nordic Entreprenør AS | Construction | 2021 |
| Norsebit AS | Information & communication | 2023 |
| Norsk Autoimport AS | Wholesale & retail | 2000 |
| NR Utvikling AS | Information & communication | 2026 |
| Nydyrking AS | Construction | 2021 |
| Ocean Mind Holding AS | | 2026 |
| Ohana Holding AS | | 2020 |
| Oves Drift AS | Financial services | 2005 |
| Oves Eiendom AS | Real estate | 2020 |
| Odd Fellow Sentrene Trondheim AS | Real estate | 1983 |
| Paal AS | Real estate | 2019 |
| Pace AS | Information & communication | 2019 |
| Pip Urgolf AS | Wholesale & retail | 2024 |
| Pizzapizza AS | Hospitality | 2021 |
| Pizzapizza Jakobsli AS | Hospitality | 2023 |
| Plan Investor AS | | 2022 |
| Positive Consulting Norway AS | Professional & scientific | 2014 |
| Precident Invest AS | Health & social care | 2025 |
| Premasoft Solutions AS | Information & communication | 2013 |
| Påls Holding AS | | 2025 |
| Raudåsflata Eiendom AS | Real estate | 2022 |
| Real Go 4 Life AS | Wholesale & retail | 2020 |
| Refseth Multiservice AS | Real estate | 2018 |
| Relax Space Trondheim AS | Other services | 2025 |
| Relax Space Trondheim S AS | Other services | 2026 |
| RF Larsen AS | Professional & scientific | 2017 |
| Rig Invest AS | Professional & scientific | 2015 |
| Roi Consulting AS | Professional & scientific | 2000 |
| Rolf Johan Jutulstad Holding AS | | 2025 |
| Rusten Holding AS | | 2018 |
| RXW Da | Wholesale & retail | 2021 |
| S. B. Jenssen AS | | 2018 |
| Sabrura Skovgård AS | Hospitality | 2023 |
| Sagareiser AS | Administrative & support | 2023 |
| Sagen Byggservice AS | Construction | 2019 |
| Sagosa AS | Professional & scientific | 2016 |
| Sandsør Fysioterapi AS | Health & social care | 2005 |
| Schmettow Eiendom AS | Real estate | 1998 |
| Seamore AS | Professional & scientific | 2019 |
| Sellsted Invest AS | | 2021 |
| Senatet AS | Professional & scientific | 2023 |
| Senatet Holding AS | | 2025 |
| Sento Esil AS | | 2019 |
| Sento Invest AS | | 2019 |
| Sento Sral AS | | 2019 |
| Sentre Invest AS | | 2019 |
| Shgs AS | Hospitality | 2003 |
| SK Tekniske AS | Professional & scientific | 2024 |
| Skjelten Holding AS | Professional & scientific | 2006 |
| Skovgård AS | Wholesale & retail | 1970 |
| Skåle AS | | 2019 |
| Smema Invest AS | Real estate | 2007 |
| Snowy Day Holdings AS | | 2025 |
| Solom AS | Information & communication | 2017 |
| Sommerøya AS | Administrative & support | 2012 |
| Sport Performance 2 AS | Education | 2023 |
| Sport Performance AS | Education | 2020 |
| STC Property AS | Real estate | 2023 |
| Stefna AS | Professional & scientific | 2015 |
| Sterilectric Solution AS | Wholesale & retail | 2016 |
| Stokkbekken Barnehage AS | Education | 2007 |
| Stolen Investment AS | | 2025 |
| Storåsfestivalen AS | Arts & recreation | 2009 |
| Strindfjord AS | | 2021 |
| Sverre Gagnat Holding AS | | 2022 |
| Sæterengen Holding AS | | 2024 |
| Sætherhus AS | Construction | 2015 |
| T&R Holding AS | Real estate | 2014 |
| T-T Holding AS | | 2020 |
| Talmo AS | Professional & scientific | 2025 |
| Tanem Holding AS | Manufacturing | 2005 |
| Tangvik Holding AS | Financial services | 2005 |
| Tannlege Kjetil Høye AS | Health & social care | 2025 |
| Taraldsgårdsveita 11 AS | Real estate | 2023 |
| Taubåtkompaniet AS | Transport & logistics | 2005 |
| The Benign Mount Archives AS | Financial services | 2012 |
| The Robbins Company | Wholesale & retail | 2013 |
| Themik AS | Professional & scientific | 2014 |