| Heimdalsvegen 14A AS | Real estate | 2019 |
| Heimdalsvegen 4 Holding AS | Real estate | 2020 |
| Heimdalsvegen 7 AS | Real estate | 2014 |
| Heimdalsvegen 7 Hjemmel AS | Real estate | 2025 |
| Heimdalsvegen 7 Holding AS | | 2025 |
| Heimdalsvegen 7 Næring AS | Real estate | 2025 |
| Heimdalsvegen Pizza & Grill AS | Hospitality | 2017 |
| Heimdalsveien 10B AS | Real estate | 2025 |
| Heinsa AS | Professional & scientific | 2003 |
| Helge Pedersen Fysioterapi AS | Health & social care | 2021 |
| Helsemessig AS | Wholesale & retail | 2023 |
| Helt Heim Eiendom AS | Real estate | 2026 |
| Helt Heim Holding AS | | 2026 |
| Hem Ansatte AS | Real estate | 2016 |
| Henosa Holding AS | | 2021 |
| Hent AS | Construction | 2006 |
| Hent Eiendom AS | Real estate | 2007 |
| Hetu Holding AS | Administrative & support | 2005 |
| HGB Eiendom AS | Wholesale & retail | 2005 |
| HGB Eiendomsforvaltning AS | Real estate | 2025 |
| Hha Holding AS | Construction | 2021 |
| Hilo Holding AS | Information & communication | 2025 |
| Hito Consulting AS | Wholesale & retail | 2019 |
| HK Bygg AS | Construction | 2026 |
| HKS Eiendom AS | Real estate | 2005 |
| HLN AS | Information & communication | 2012 |
| HMS Fysio AS | Health & social care | 2021 |
| HMV10 AS | Real estate | 2016 |
| Hoff Heimdal Ans | Wholesale & retail | 1991 |
| Hogstad Eie AS | Professional & scientific | 2018 |
| Holterman Invest AS | | 2025 |
| Home Team AS | Professional & scientific | 2024 |
| Home Valley AS | Arts & recreation | 2019 |
| Hornebergveien 11 AS | Real estate | 2012 |
| Hosa Holding AS | | 2021 |
| HT Eiendom & Drift AS | Real estate | 1970 |
| Huitfeldtbrygga AS | Real estate | 2009 |
| Hund Som Hobby AS | Wholesale & retail | 1990 |
| Husar AS | Construction | 2024 |
| Husby Utemiljø AS | Administrative & support | 2026 |
| Huto AS | Professional & scientific | 2025 |
| Hverdagsmoro AS | Education | 2024 |
| Hydra Pipe Nord AS | Wholesale & retail | 2016 |
| Håkon Jarls Næring Holding AS | Real estate | 2018 |
| Håndkirurgen AS | Health & social care | 2015 |
| Hårberg Holding AS | Professional & scientific | 2025 |
| Hårstad Minde AS | Real estate | 2012 |
| Hårstad Minde B-2 PK AS | Real estate | 2024 |
| Hårstad Minde B-4 Eiendom AS | Real estate | 2020 |
| Hårstad Minde B4 AS | Real estate | 2019 |
| Hårstad Minde Holding AS | | 2025 |
| Hårstad Minde PK B-1 AS | Real estate | 2025 |
| Hårstad Minde Tomt B-1 Holding AS | | 2025 |
| Høgger'N AS | Wholesale & retail | 2010 |
| Høggern Mc-Deler AS | | 2026 |
| Høghø AS | Real estate | 2017 |
| Høiseth Gullikstad AS | Professional & scientific | 2013 |
| Høiseth Utvikling AS | Real estate | 2008 |
| Hølondvegen AS | Real estate | 2018 |
| IB1 Holding AS | | 2023 |
| Iboks Minilager AS | Transport & logistics | 2018 |
| Ideia AS | Information & communication | 2019 |
| Imvesta AS | Financial services | 2017 |
| Industrivegen 39 D AS | Real estate | 2025 |
| Industriveien 23A AS | Real estate | 2019 |
| Industriveien 31 AS | Real estate | 1994 |
| Industriveien 37 AS | Construction | 2013 |
| Industriveien 39 C Holding AS | Real estate | 2020 |
| Industriveien 39E AS | Real estate | 2005 |
| Industriveien 47 AS | Real estate | 2019 |
| Industriveien 49 C AS | Real estate | 2024 |
| Industriveien 49D AS | Real estate | 2024 |
| Industriveien 65 Eiendom AS | Real estate | 2024 |
| Industriveien 71 AS | Real estate | 2024 |
| Industriveien 75 AS | Real estate | 2006 |
| Inergo AS | Professional & scientific | 2011 |
| Ineural AS | Information & communication | 2023 |
| Ingar Holding AS | | 2019 |
| Ingvald Ystgaards Vei 17 Holding AS | Real estate | 2021 |
| Inlocus AS | Professional & scientific | 2025 |
| Innherredsveien 49 AS | Real estate | 2025 |
| Inrigo AS | Professional & scientific | 2018 |
| Inrigo Eiendom AS | Real estate | 2016 |
| Inrigo Holding AS | Professional & scientific | 2018 |
| Inter-Data Trondheim AS | Professional & scientific | 1985 |
| Interiør Opas AS | Wholesale & retail | 1995 |
| International Butikk AS | Transport & logistics | 2020 |
| Invenia Holding AS | Real estate | 2007 |
| Invenia Invest AS | Real estate | 2007 |
| Inédit K1 AS | Hospitality | 2015 |
| Inédit K2 AS | Hospitality | 2019 |
| Inédito AS | Hospitality | 2015 |
| Isbjørn AS | Manufacturing | 1989 |
| Isla AS | Professional & scientific | 2023 |
| Islek Eiendom AS | Real estate | 2017 |
| Isobygg AS | Construction | 2020 |
| Isoleringsmaskinen Norge AS | Administrative & support | 2024 |
| Ivar Lykkes Veg 5 Holding AS | Real estate | 2013 |
| Ivar Lykkes Vei 7 AS | Real estate | 2017 |
| Ivar Løften Industriservice AS | Construction | 1988 |