| Hegdehaugen Boligforvaltning AS | Real estate | 2007 |
| Hegdehaugen Eiendomsmegling AS | Real estate | 2023 |
| Hegdehaugen Forretningsførsel AS | Real estate | 2007 |
| Hegdehaugen Legesenter AS | Health & social care | 2020 |
| Hegdehaugsveien 1 SNR 1 AS | Real estate | 2025 |
| Hegdehaugsveien 1 SNR 3 AS | Real estate | 2025 |
| Hegdehaugsveien 12 AS | Real estate | 2019 |
| Hegdehaugsveien 21 B AS | Real estate | 2006 |
| Hegdehaugsveien 22 Næring AS | Real estate | 2024 |
| Hegdehaugsveien 22 Oslo AS | | 2024 |
| Hegdehaugsveien 23 AS | Real estate | 2007 |
| Hegdehaugsveien 24 AS | Real estate | 2016 |
| Hegdehaugsveien 25 Bolig AS | Real estate | 2012 |
| Hegdehaugsveien 25 Næring AS | Real estate | 2017 |
| Hegdehaugsveien 26 AS | Real estate | 2015 |
| Hegdehaugsveien 27 AS | Real estate | 2013 |
| Hegdehaugsveien 30 AS | Real estate | 1969 |
| Hegdehaugsveien 31 Ans | Real estate | 1990 |
| Hegdehaugsveien 32 AS | Real estate | 2016 |
| Hegdehaugsveien 32 Hjemmel AS | Real estate | 2025 |
| Hegdehaugsveien 34 Ans | Real estate | 2003 |
| Hegdehaugsveien 35 AS | Real estate | 2015 |
| Hegdehaugsveien 36 AS | Real estate | 2023 |
| Hegdehaugsveien 4 Holding AS | Real estate | 2024 |
| Hegdehaugsveien 4 Næring AS | Real estate | 2024 |
| Hegdehaugsveien Eiendomsinvest 2 AS | Real estate | 2020 |
| Hegdehaugsveien Eiendomsinvest AS | Real estate | 2020 |
| Hegdehaugsveien Næring AS | Real estate | 2025 |
| Hegdetina AS | Health & social care | 2024 |
| Hege & Eian Da | Professional & scientific | 2001 |
| Hege B Holding AS | | 2024 |
| Hege Engen AS | Professional & scientific | 2020 |
| Hegel AS | Manufacturing | 2017 |
| Hegel Audio AS | Professional & scientific | 2006 |
| Hegel Music System AS | Professional & scientific | 2002 |
| Hegema Holding AS | | 2025 |
| Heger Invest AS | Financial services | 2005 |
| Hegfoss AS | | 2004 |
| Hegge Invest AS | | 2023 |
| Heggedal Bolig AS | Real estate | 2025 |
| Heggedal Eiendomsutvikling AS | Real estate | 2007 |
| Heggedal Terrasse AS | Real estate | 2017 |
| Heggedalsvegen 15 Eiendom AS | Real estate | 2022 |
| Heggedalsveien 350 AS | Real estate | 2019 |
| Heggeli Design AS | Professional & scientific | 2017 |
| Heggeli Eiendom AS | Real estate | 1993 |
| Heggeli Hagelag AS | | 2023 |
| Heggeli Utvikling AS | Real estate | 2019 |
| Heggelibakken 19 Invest AS | | 2007 |
| Heggelund & Koxvold AS | Professional & scientific | 1983 |
| Heggen Consulting AS | Professional & scientific | 2023 |
| Heggenhaugen AS | | 2018 |
| Heggeseth Holding AS | Real estate | 2020 |
| Heggheim IT AS | Information & communication | 2017 |
| Heggholmen Vannverk AS | Water & waste | 2021 |
| Heggland Invest AS | Financial services | 2005 |
| Heggo Teigland AS | | 2026 |
| Heggstadmoen Næringspark 7 AS | Transport & logistics | 2009 |
| Heggz Hedge Holding AS | | 2026 |
| Heggø Eiendom AS | | 2021 |
| Hegive AS | Professional & scientific | 2016 |
| Hegn Frisør AS | Other services | 2016 |
| Hegn Personforsikring AS | Real estate | 2016 |
| Hegna Eiendom AS | Real estate | 2006 |
| Hegna Elektro AS | Construction | 2016 |
| Hegnar Media AS | Information & communication | 1981 |
| Hegnasletta 6 AS | Real estate | 2006 |
| Hegnaveien 1-7 AS | Real estate | 2021 |
| Hegne Eiendom AS | Real estate | 2023 |
| Hegra Invest AS | Financial services | 2013 |
| Hegren Holding AS | Professional & scientific | 2005 |
| Hegreneset AS | Real estate | 1990 |
| Hegreneset Energisentral AS | Water & waste | 2026 |
| Hegreneset Holding AS | Real estate | 2018 |
| Hegreneset Infrastruktur AS | Real estate | 2021 |
| Hegreneset Parkering AS | Transport & logistics | 2026 |
| Hegstadmoen 7 AS | Real estate | 2015 |
| Heh Drosjedrift AS | Transport & logistics | 2020 |
| Heh Drosjeutleie AS | Administrative & support | 2020 |
| Heh Holding AS | Transport & logistics | 2018 |
| Heh-Holding AS | | 2026 |
| Hehe Digital AS | Information & communication | 2022 |
| Hei AS | Information & communication | 2018 |
| Hei Hei Holding AS | Financial services | 2017 |
| Hei Import AS | Wholesale & retail | 2025 |
| Hei Leif AS | Arts & recreation | 2014 |
| Hei Reklamebyrå AS | Professional & scientific | 2022 |
| Hei Sveis Oslo AS | Other services | 2016 |
| Heia Bohus AS | Real estate | 2019 |
| Heia Consulting AS | Information & communication | 2023 |
| Heia Gård Invest AS | Real estate | 2014 |
| Heia Ullern AS | Hospitality | 2024 |
| Heiaklubben AS | Professional & scientific | 2020 |
| Heian AS | Real estate | 2002 |
| Heian Fitness AS | Education | 2021 |
| Heiasvingen 33 AS | Real estate | 1987 |
| Heiasvingen 50 AS | Wholesale & retail | 2018 |
| Heiaterrassen 20 AS | Real estate | 2015 |
| Heiberg & Johnsen Holding AS | Real estate | 2017 |
| Heiberg Cummings Design Ans | Professional & scientific | 1991 |