| Nordset Utvikling AS | Real estate | 1989 |
| Nordset Vannverk SA | Water & waste | 2006 |
| Nordsetvegen 348 AS | Real estate | 2014 |
| North Health & Beauty AS | Wholesale & retail | 2025 |
| Norwegian Fintech AS | Administrative & support | 2018 |
| Npbot 824 Holding AS | | 2023 |
| Nye Trøåsen N AS | | 2023 |
| O. Haugrønning AS | Construction | 2007 |
| Oldervik Eiendom AS | Administrative & support | 2024 |
| Oldervik Investment AS | Administrative & support | 2019 |
| Othea Ans | Wholesale & retail | 1987 |
| P.Hjem Holding AS | | 2023 |
| Portxpert Midt-Norge AS | Wholesale & retail | 2023 |
| Pre-Form AS | Manufacturing | 2016 |
| Preventor AS | Professional & scientific | 1988 |
| Provera AS | Professional & scientific | 2010 |
| PX Eiendom AS | Real estate | 2025 |
| PX Holding AS | Wholesale & retail | 2023 |
| R.S.J Invest AS | | 2025 |
| Ramlo Holding AS | Mining & quarrying | 2018 |
| Redpoint Software Ans | Information & communication | 2006 |
| Rhaugan AS | Arts & recreation | 2023 |
| Richard Reklev AS | | 2025 |
| Riggy AS | Real estate | 2023 |
| Rivendell Invest AS | Information & communication | 2021 |
| RM Interesser AS | | 2004 |
| Rock Pop AS | Wholesale & retail | 2021 |
| Royal Crown Taxi AS | Transport & logistics | 2022 |
| RP Auto AS | Wholesale & retail | 2015 |
| RT Maskin AS | Transport & logistics | 2012 |
| RTT Holding AS | Real estate | 2021 |
| Rullebu AS | | 2006 |
| Rørlegger T. Sundset AS | Construction | 2010 |
| Røros Helsesenter AS | Real estate | 2016 |
| Scandic Ecom AS | Wholesale & retail | 2025 |
| Schanke AS | Construction | 2023 |
| Schnitler Holding AS | Professional & scientific | 2023 |
| Selbu Spinneri AS | Manufacturing | 2010 |
| Selli Rehabiliteringssenter AS | Health & social care | 1986 |
| Selt Norway AS | Administrative & support | 2021 |
| Sentrumstomta AS | Real estate | 2007 |
| Sfa AS | | 2020 |
| SGJ Holding AS | Real estate | 2014 |
| Singsaker Panorama AS | Real estate | 2018 |
| Siving Tore Steen AS | Information & communication | 2021 |
| Sjøbygda Eiendom AS | Real estate | 2016 |
| Skjerve Holding AS | Wholesale & retail | 2022 |
| Skogvurdering AS | Agriculture & fishing | 2003 |
| Skorstad Bygg AS | Construction | 2002 |
| Skorstad Holding AS | Construction | 2005 |
| Smart Funding AS | Professional & scientific | 2008 |
| Solems Rosetter AS | Manufacturing | 2026 |
| Spire Ernæring AS | Education | 2014 |
| Stall Granly AS | Arts & recreation | 2023 |
| Stiftstaden Bygg AS | Construction | 2023 |
| Stormyra Park AS | Real estate | 2007 |
| Strand Transport AS | Transport & logistics | 2022 |
| Strøket Frisør AS | Other services | 1998 |
| Sundset Holding AS | | 2025 |
| Sundset Maskin AS | Administrative & support | 2021 |
| System Flis AS | Construction | 2021 |
| T. Engen AS | Construction | 2014 |
| T. Opland Holding AS | | 2021 |
| T.Gunnes AS | Transport & logistics | 2026 |
| T.T.H. Holding AS | | 2022 |
| Tag Utleie AS | Administrative & support | 2016 |
| Tellugen Drift AS | Construction | 2023 |
| TGS Lysteknikk AS | Wholesale & retail | 2019 |
| The Grown-Up Travel Company AS | Professional & scientific | 2005 |
| Thomas Leer AS | | 2023 |
| TL Live AS | Administrative & support | 2020 |
| Tm-Transport AS | Transport & logistics | 2017 |
| Tmavi AS | Professional & scientific | 1999 |
| Tokri AS | Professional & scientific | 2023 |
| Tom Brede Frigård Holding AS | | 2005 |
| Tomas Snekkeri AS | Construction | 2023 |
| Tomster AS | Other services | 2012 |
| Top Care AS | Real estate | 2021 |
| Torven Bolig AS | Real estate | 2026 |
| Torven Eiendom AS | Real estate | 2015 |
| Torven Entreprenør AS | Construction | 2012 |
| Torven Holding AS | Real estate | 2014 |
| Totallyd AS | Arts & recreation | 2026 |
| Totallyd Holding AS | | 2026 |
| Treng Kapital AS | Professional & scientific | 2010 |
| Trondheim Bad Og Byggteknikk AS | Construction | 2021 |
| Trondheim Rørvakt AS | Construction | 2019 |
| Trøndelag Holding AS | Financial services | 2014 |
| Trøåsen Utbyggingsselskap AS | Real estate | 2000 |
| Tullusmyra 537/62 AS | Real estate | 2022 |
| Tussestua Familiebarnehage AS | Education | 2005 |
| Tæss Holding AS | | 2005 |
| Ulstad Maskin AS | Wholesale & retail | 1997 |
| Utleira Park AS | Real estate | 2016 |
| Vardgrind BKS9 AS | | 2024 |
| Vassfjell Prosjekt AS | Real estate | 2015 |
| Vassfjellet Vinterpark AS | Arts & recreation | 2018 |
| Verftsgata 1 C AS | Real estate | 2011 |
| Vibeke Forbord AS | Wholesale & retail | 2020 |
| Villa Falck Ans | Real estate | 2003 |