| Helgesensgt. 71, Seksjon 2 AS | Real estate | 2012 |
| Helgestemning Holding AS | | 2024 |
| Helgetun Invest AS | Professional & scientific | 2006 |
| Helhetlig Byggeledelse AS | Professional & scientific | 2026 |
| Helhetskontroll AS | Professional & scientific | 2005 |
| Heli Gold Service Limited | Wholesale & retail | 2022 |
| Heli Invest AS | | 2021 |
| Helicase Bioscience AS | Information & communication | 2022 |
| Helice AS | Professional & scientific | 2007 |
| Helicenter Norway AS | Transport & logistics | 1987 |
| Helin Holding AS | | 2023 |
| Helio AS | Real estate | 1996 |
| Helion AS | | 2025 |
| Helion Studios AS | Wholesale & retail | 2003 |
| Helios Eiendom AS | Real estate | 2017 |
| Helios Magnora Sol AS | Professional & scientific | 2022 |
| Helisys AS | Professional & scientific | 2000 |
| Helium AS | Arts & recreation | 2005 |
| Heliwing Helikopter AS | Transport & logistics | 2010 |
| Helix Investments AS | Financial services | 2015 |
| Helix Offshore Services AS | Professional & scientific | 2016 |
| Helix Partners AS | Professional & scientific | 2025 |
| Heljos AS | Professional & scientific | 2019 |
| Hell AS | Wholesale & retail | 2021 |
| Hell Eiendom AS | Real estate | 2001 |
| Hella Holding AS | | 2023 |
| Hellan & Hallan AS | Arts & recreation | 2018 |
| Helland Ingebrigtsen Da | Professional & scientific | 2011 |
| Helland IT AS | Information & communication | 2008 |
| Helland Studio AS | Arts & recreation | 2026 |
| Hellberg Eiendom AS | Real estate | 2005 |
| Hellborg Holding AS | | 2021 |
| Helle Nini AS | | 2020 |
| Hellebæk Eiendom II AS | Real estate | 2018 |
| Helleco AS | Professional & scientific | 2026 |
| Hellefjell Holding AS | | 2026 |
| Helleli Eiendom AS | Real estate | 2013 |
| Hellem Invest AS | Financial services | 2018 |
| Hellenes Allsidige Service AS | Construction | 2005 |
| Hellenicon AS | Real estate | 2003 |
| Hellenvegen 15 AS | Real estate | 2011 |
| Hellenveien 19 AS | Real estate | 2015 |
| Heller AS | | 2021 |
| Helleristningen AS | Real estate | 2007 |
| Hellermann Tyton AS | Wholesale & retail | 1980 |
| Hellermyrveien 14 AS | | 2021 |
| Hellermyrveien 7 AS | Real estate | 2021 |
| Hellerud Barnehage SA | Education | 1995 |
| Hellerud Eiendom Invest AS | | 2017 |
| Hellerud Eiendom Og Utvikling AS | Real estate | 2015 |
| Hellerud Hovedgård AS | Real estate | 1989 |
| Hellerud Næringspark AS | Real estate | 1993 |
| Hellerudhaugen Ans | Real estate | 2013 |
| Hellerudsletta Eiendom AS | Real estate | 2006 |
| Hellerudsletta Eiendom Holding AS | Real estate | 2007 |
| Hellerudtoppen Barnehage SA | Education | 1990 |
| Hellerudveien 1 Eiendom AS | Real estate | 2014 |
| Hellerudveien 36 AS | Real estate | 2019 |
| Helles AS | Real estate | 2007 |
| Helleseel AS | Financial services | 2005 |
| Hellesen & Partners AS | Professional & scientific | 2021 |
| Hellesenga Hyttefelt Vann Og Avløpslag SA | Water & waste | 2011 |
| Hellestad Maskin AS | Wholesale & retail | 2019 |
| Hellestubben Eiendom AS | Real estate | 2020 |
| Helleveien 20 AS | Real estate | 2020 |
| Helliesen AS | Real estate | 2011 |
| Helling Arkitekter AS | Professional & scientific | 2021 |
| Helling AS | Real estate | 1935 |
| Helling Holding AS | Real estate | 2005 |
| Hellinga 5 B AS | Households | 1957 |
| Hellinga Terrasse Hus AS | Real estate | 2013 |
| Helljesen Consult AS | Professional & scientific | 1999 |
| Helljesen Eiendom AS | Information & communication | 2009 |
| Helljesen Holding AS | Information & communication | 2021 |
| Hello AS | Information & communication | 2019 |
| Hello Bard AS | Manufacturing | 2016 |
| Hello Gorgeous AS | Wholesale & retail | 2024 |
| Hello Holding AS | | 2026 |
| Hello Mobile AS | Information & communication | 2015 |
| Hellolaisen AS | | 2019 |
| Hellolang AS | Information & communication | 2025 |
| Hellsbells Holding AS | Financial services | 2018 |
| Hellstrand Consulting AS | Information & communication | 2018 |
| Hellstrand Invest AS | Information & communication | 2018 |
| Hellstrøm Flygel Og Piano AS | Wholesale & retail | 2011 |
| Hellum Ans | Professional & scientific | 1991 |
| Hellum Holding AS | Financial services | 1995 |
| Hellum Og Rubio AS | Professional & scientific | 2025 |
| Hellum Y Rubio Holding AS | Professional & scientific | 2025 |
| Helly Hansen (Us) Inc | Professional & scientific | 2005 |
| Helly Hansen AB | Administrative & support | 2014 |
| Helly Hansen AS | Wholesale & retail | 1970 |
| Helly Hansen Holding AS | Wholesale & retail | 1997 |
| Helly Holding AS | Financial services | 2014 |
| Helly Studio AS | Professional & scientific | 2023 |
| Helm Sens AS | Information & communication | 2025 |
| Helm Styrbord AS | Real estate | 2021 |
| HELM.1 Holding AS | Financial services | 2005 |
| Helmart AS | Real estate | 2011 |
| Helmax Barnehagering Ans | Education | 2004 |