| Hivako AS | Wholesale & retail | 2018 |
| Hive & Co AS | Professional & scientific | 2025 |
| Hjelpemidler Øst AS | Wholesale & retail | 2019 |
| Hjertaas Invest AS | Construction | 2013 |
| Hjertnes Bolig I AS | Real estate | 2015 |
| Hjertnes Bolig II AS | Real estate | 2021 |
| Hjertnes Eiendom AS | Real estate | 2010 |
| Hjertnes Eiendomsdrift AS | Real estate | 1983 |
| Hjertnes Parkering AS | Real estate | 2025 |
| Hjertnespromenaden 5 AS | Real estate | 2012 |
| Hjertnespromenaden Eiendom AS | Real estate | 2022 |
| Hjertås Bygg AS | Construction | 2022 |
| Hjertås Eiendom AS | Real estate | 2015 |
| Hjertås Holding AS | Education | 2014 |
| HKV Invest AS | | 2026 |
| HL Forvaltning AS | Real estate | 2022 |
| HL Frisør AS | Other services | 2018 |
| Hlo Revisjon & Rådgivning AS | Professional & scientific | 2005 |
| Hm-Holding AS | Financial services | 2018 |
| HMH Kapital AS | | 2026 |
| Hndl AS | Manufacturing | 2021 |
| Hobb AS | | 2025 |
| Hofsø Transport AS | Transport & logistics | 2024 |
| Hog Holding AS | Financial services | 2015 |
| Holar Holding AS | | 2017 |
| Holdebakken AS | Professional & scientific | 2016 |
| Holding on AS | Professional & scientific | 2005 |
| Holmejordetveien 48 AS | Real estate | 2008 |
| Holmen Arkitekt Og Rådgivning AS | Professional & scientific | 2026 |
| Holstad Allmennmedisin AS | Health & social care | 2017 |
| Holtan AS | Real estate | 1935 |
| Holtan Industrier AS | Construction | 1991 |
| Holto AS | Real estate | 1965 |
| Holtskog Consult AS | Professional & scientific | 2026 |
| Homleid Invest AS | | 2024 |
| Hong Rui AS | Hospitality | 2005 |
| Hood Invest AS | Real estate | 1995 |
| HORISONT1 AS | Hospitality | 2024 |
| Horn AS | Wholesale & retail | 2016 |
| Horntvedtveien 230 AS | Real estate | 2022 |
| Hot Owl AS | | 2022 |
| Hotel Atlantic AS | Real estate | 1933 |
| Hotel Kong Carl AS | Hospitality | 1987 |
| Hotelldrift Sandefjord AS | Hospitality | 1989 |
| Hotvedtmoen AS | Real estate | 2005 |
| Hotvedtmoen Eiendomsselskap AS | Real estate | 1977 |
| Houmb Blikk AS | Construction | 2022 |
| Houmb Holding AS | | 2023 |
| Hovi Advisory AS | Professional & scientific | 2022 |
| HR Partner Norge AS | Professional & scientific | 2026 |
| HR Røseid AS | Professional & scientific | 2021 |
| Hr-Tjenester Vestfold AS | Professional & scientific | 2026 |
| Hr-Tjenester Vestfold Da | Professional & scientific | 2025 |
| HSH Bygg AS | Construction | 2008 |
| HSJ Eiendom AS | Real estate | 2024 |
| HSJ Holdingselskap AS | Professional & scientific | 2025 |
| HSJ Konsulent AS | Professional & scientific | 2025 |
| Htns Invest AS | | 2020 |
| Hubro Holding AS | Real estate | 2006 |
| Hud Estetikk Klinikk AS | Other services | 2024 |
| Hudlegeklinikken AS | Health & social care | 2024 |
| Hukon AS | Professional & scientific | 2019 |
| Hulii AS | Information & communication | 2019 |
| Human Verneservice AS | Wholesale & retail | 1998 |
| Hunskaar Holding AS | | 2026 |
| Hunsrød-Fevang Barnehage SA | Education | 1997 |
| Hurricane Spa AS | Manufacturing | 2024 |
| Hus & Industri Renhold Da | Administrative & support | 2007 |
| Husa Investment AS | Financial services | 2024 |
| Husa Racing AS | | 2022 |
| Huseby Holding AS | Manufacturing | 2011 |
| Huseby Quarry AS | Mining & quarrying | 2014 |
| Huset Restauranter AS | Hospitality | 2024 |
| Huset Sandefjord AS | Hospitality | 2019 |
| Husfliden Larvik & Sandefjord SA | Wholesale & retail | 1983 |
| Hush AS | | 2005 |
| Huvik Brygge AS | Real estate | 1992 |
| Huvik Eiendom AS | Real estate | 1983 |
| Huvik Holding 1 AS | | 2020 |
| Huvik Holding LB AS | | 2020 |
| Huvik-Holding AS | | 2019 |
| Huy Vu Invest AS | Health & social care | 2022 |
| Hval Sjokoladefabrikk ASA | Manufacturing | 1995 |
| Hvalen Tannklinikk AS | Health & social care | 2025 |
| Hvalen Taxi AS | Transport & logistics | 2025 |
| Hvalfangergata AS | Real estate | 2007 |
| Hvalfangstens Hus AS | Real estate | 1934 |
| Hvalfoto Ans | Wholesale & retail | 1991 |
| Hvaltann AS | | 2025 |
| Hvaltann Eiendom AS | Real estate | 2026 |
| Hvaltorvet Helsekost AS | Wholesale & retail | 2014 |
| Hvaltorvet Mat AS | Wholesale & retail | 2018 |
| Hvidsten Investment AS | Professional & scientific | 2006 |
| Hvidsten Investment II AS | Professional & scientific | 2014 |
| Hvidsten-Jensen AS | Professional & scientific | 2019 |
| Hvidsten-Jensen Holding AS | Professional & scientific | 2021 |
| Hvidts Plass AS | Real estate | 2013 |
| Hwin Studio AS | Professional & scientific | 2025 |
| Hygge Dining Group AS | | 2025 |
| Hyltén AS | Hospitality | 2006 |