| Grus Eiendom AS | Real estate | 2009 |
| Gryfa AS | | 2019 |
| Grønlandsleiret 55 Næring AS | Real estate | 2022 |
| Gründer Akademiet AS | Professional & scientific | 2015 |
| Gulvtekk AS | Construction | 2025 |
| GVN 14 AS | Real estate | 2020 |
| Gytilen AS | Professional & scientific | 2023 |
| Gytilen Holding AS | Professional & scientific | 2023 |
| H&M Holding AS | | 2023 |
| Habada AS | Information & communication | 1996 |
| Habb Eiendom AS | Real estate | 2005 |
| Hairport Drift AS | Other services | 2002 |
| Hairport Frisør AS | Other services | 2000 |
| Halvsol Holding AS | | 2026 |
| Hama Accounting AS | Professional & scientific | 2019 |
| Haneborgskogen AS | Real estate | 2017 |
| Hanna Holding AS | Information & communication | 2018 |
| Happy Detox AS | Wholesale & retail | 2024 |
| Happy Kids AS | Wholesale & retail | 2015 |
| Haralds Vei 15 AS | Real estate | 1989 |
| Haraldsvei 13 AS | Real estate | 2023 |
| Haraldsveien 17 AS | Real estate | 2018 |
| Haris Iman Transport AS | Transport & logistics | 2023 |
| Hashicore AS | Information & communication | 2025 |
| Hauger Logistics AS | Professional & scientific | 1991 |
| Haugerud Tannlegesenter AS | Health & social care | 2026 |
| Haukeskogen AS | | 2026 |
| Haut AS | Real estate | 2010 |
| Havblikk Industrier AS | Real estate | 2007 |
| Havliv AS | Professional & scientific | 2015 |
| HC Netthandel AS | Wholesale & retail | 2022 |
| Hedenstad Finans AS | | 2020 |
| Heim & Lundin AS | Real estate | 1929 |
| Heireth Holding AS | | 2022 |
| Heit AS | Manufacturing | 2024 |
| Hekne Invest AS | | 2018 |
| Helberg AS | Real estate | 2006 |
| Helgheim Invest AS | | 2025 |
| Helgheim Nordic Invest AS | | 2025 |
| Helleraknes Holding AS | | 2016 |
| Hellerød Eiendom AS | Real estate | 2022 |
| Hellerød Holding AS | Transport & logistics | 2020 |
| Hellerød Transport AS | Transport & logistics | 2020 |
| Helse Med Visjoner Ans | Health & social care | 2004 |
| Hensmoen AS | Real estate | 2006 |
| Hermod Brekke DR. Techn. Consultant AS | Professional & scientific | 2011 |
| Hesteportalen AS | Professional & scientific | 2000 |
| HFH Holding AS | | 2025 |
| Hi Flo AS | Professional & scientific | 2014 |
| Hibas Arabiske Tolketjeneste AS | Professional & scientific | 2024 |
| Himmelhagen AS | Wholesale & retail | 1995 |
| Hjernemat AS | Hospitality | 2023 |
| Hjulrekvisita AS | | 2005 |
| Hjørnet Restaurant & Bar AS | Hospitality | 2025 |
| HM Bolig AS | Real estate | 2021 |
| HMK Investment AS | Wholesale & retail | 2014 |
| Hold Holding AS | | 2021 |
| Holdhus Invest AS | | 2022 |
| Holding Company AS | | 2022 |
| Homeland AS | | 2022 |
| Hon Portfolio AS | | 2025 |
| Honningkongen AS | Agriculture & fishing | 2024 |
| HR Capital Holdings AS | Health & social care | 2023 |
| HR Helse AS | Health & social care | 2025 |
| HS Arkitekter AS | Professional & scientific | 2018 |
| HTR Holding AS | Wholesale & retail | 2019 |
| Hude AS | Information & communication | 2025 |
| Hugo Karlsen AS | Wholesale & retail | 2020 |
| Hum AS | Wholesale & retail | 2021 |
| Hunting Birdies AS | Wholesale & retail | 2014 |
| Huse Norge Holding AS | Real estate | 2017 |
| Husebo AS | Real estate | 2017 |
| Husprosjekt AS | Construction | 2015 |
| Hustle Invest AS | | 2020 |
| Hvamveien 2 AS | Real estate | 2006 |
| HZ Invest AS | | 2026 |
| Härjedals Kök AS | Wholesale & retail | 2024 |
| Håvard Sitt AS | Wholesale & retail | 2017 |
| Håvardstun AS | Real estate | 2006 |
| Høibraaten & Sønn AS | Transport & logistics | 2012 |
| Høigaard Consulting AS | Professional & scientific | 2025 |
| Iag Investments AS | Real estate | 2013 |
| Ibenholt Holding AS | Real estate | 2015 |
| Idk Idrettskompetanse AS | Wholesale & retail | 1997 |
| Igloo Innovation AS | Professional & scientific | 2017 |
| Illusion Work AS | Professional & scientific | 2016 |
| Imaje AB | Wholesale & retail | 2002 |
| Incrementum Helse AS | Health & social care | 2021 |
| Indi Spice AS | Hospitality | 2014 |
| Industriell Måleteknikk AS | Wholesale & retail | 1997 |
| Industriportspesialisten AS | Wholesale & retail | 2001 |
| Industriveien 7 B Eiendom AS | Real estate | 2007 |
| Inf Group AS | Information & communication | 2022 |
| Ing T Hagen AS | Professional & scientific | 1988 |
| Ing. Paal Kristoffersen AS | Professional & scientific | 2014 |
| Ingholm Invest AS | Professional & scientific | 2016 |
| Ingvest AS | | 1990 |
| Inkludi AS | Information & communication | 2016 |
| Innerst I Hjørnet AS | | 2026 |
| Innersvingen AS | Real estate | 2017 |