| HS Import AS | Moss | 2006 |
| HS Kran AS | Stryn | 2012 |
| HS Maskin & Utemiljø AS | Åsen | 2010 |
| HS Maskinutleie AS | Oppdal | 2023 |
| HS Tech | Dk-7323 Give | 2025 |
| HSB Enterprises Ltd | Ba14 7Se Hilperton | 2019 |
| HSD Senterforening AS | Bremnes | 2007 |
| Hse Onshore AS | Holmestrand | 2019 |
| Hse Support AS | Florø | 2009 |
| Hsi AS | Bodø | 2026 |
| Hsmai Region Europe Ltd | London Ec1R 5Hl England | 2023 |
| Hso Enterprise Solutions Ehf. Nuf | Is-201 Kopavogur | 2026 |
| HSS Utleie AS | Sandvika | 2020 |
| HT Air Consulting AS | Eide | 2025 |
| HT Anleggsgartner Og Utleie AS | Kleppe | 2020 |
| HT Eiendom Og Utleie AS | Skjeberg | 2015 |
| HT Hird AS | Norheimsund | 2020 |
| HT Safe A/S | Hamarøy | 1988 |
| HT Service AS | Hitra | 2012 |
| HTB Eiendomservice AS | Matrand | 1998 |
| HTG AS | Bryne | 2018 |
| HTK Eiendom Service AS | Sandnes | 2024 |
| HTK Holding AS | Eidfjord | 2017 |
| HTS Byggvarme Norge AS | Oslo | 2018 |
| Https Record 57 Ltd Nuf | N146Qh, London, Southgate | 2018 |
| Huawei Technologies Co. Ltd | Fornebu | 2016 |
| Huba Supply AS | Vennesla | 2013 |
| HUBI-365 Ans | Oslo | 2012 |
| Hubro Sør AS | Isdalstø | 1993 |
| Hughes Subsea Services Ltd | L23 8Tt Liverpool | 2022 |
| Hugin&Munin AS | Frei | 2023 |
| Hui Drift AS | Duken | 2022 |
| Huikui AS | Sykkylven | 2020 |
| Huisman Personnel Services B.V. Nuf | Bergen | 2025 |
| Human AS | Bergen | 2022 |
| Human Kapital Vekst AS | Ålesund | 2014 |
| Human Resources Recruitment Spzoo | 00-719 Warszawa | 2008 |
| Humana Elisenberg Consulting Da | Oslo | 1999 |
| Humano AS | Sandnes | 2023 |
| Humberseth AS | Ørsta | 2001 |
| Humberseth Reinhald AS | Ørsta | 2007 |
| Humimpact Global AS | Fornebu | 2026 |
| Hummelfjell Hytteservice Da | Os I Østerdalen | 2005 |
| Hummelsund Utleie & Vedlikehold AS | Steinsland | 2019 |
| Humor Oo AS | Oslo | 2023 |
| Hund Og Eier Da | Tinn Austbygd | 2025 |
| Hundeide Maskinutleie AS | Hønefoss | 2025 |
| Hundevaktpatruljen Da | Oslo | 1989 |
| Hundremeterskogen AS | Saksvik | 2014 |
| Hundvin Holding AS | Bergen | 2016 |
| Hunnebeck Italia S.P.A. | It-22078 Turate Co | 2024 |
| Hunnsvegen 17 Gjøvik AS | Molde | 2005 |
| Hunsfos Opplevelse AS | Vennesla | 2015 |
| Hunting House of Canada AS | Torvikbukt | 2012 |
| Huntthewilds AS | Oppstryn | 2026 |
| Hurtig Knuta AS | Geilo | 2019 |
| Hurtig Service AS | Oslo | 2019 |
| Hurtigruten Americas Nuf | Bothell Wa 98021 | 2008 |
| Hurtigruten France Nuf | Fr-75011 Paris | 2025 |
| Hurtigruten UK Nuf | London Se1 9Ea England | 2025 |
| Hurum Forretningsdrift AS | Tofte | 1997 |
| Hus & Hage Kompaniet AS | Moss | 2024 |
| Hus & Industri Renhold Da | Sandefjord | 2007 |
| Hus Og Bedriftservice AS | Strømmen | 1969 |
| Hus Og Hageservice AS | Overhalla | 2006 |
| Hus Spa AS | Vatne | 2024 |
| Hus, Hytte Og Hageservice Valdres AS | Etnedal | 2019 |
| Hus-Hjelpen Ltd Nuf | Hundvin | 2007 |
| Husby Utemiljø AS | Heimdal | 2026 |
| Huse & Berg AS | Fornebu | 2008 |
| Huseby Byggservice AS | Saupstad | 2023 |
| Husebyskogen Medisinske Senter AS | Oslo | 2005 |
| Huseiertjenester AS | Alta | 2012 |
| Husevik Vakt Og El-Sikkerhet AS | Ski | 2016 |
| Hushjelpen Da | Stavern | 1997 |
| Husleieservice AS | Oslo | 1995 |
| Husmorvikarene AS | Sandnes | 2013 |
| Huspartneren AS | Hommersåk | 2025 |
| Hustadvika Adventure AS | Elnesvågen | 2018 |
| Hustadvika Havsportsenter AS | Elnesvågen | 2023 |
| Hustadvika Maskinutleie AS | Elnesvågen | 2026 |
| Hustadvika Servicepartner AS | Hustad | 2020 |
| Hustøft AS | Soknedal | 2016 |
| Huuse Drift AS | Bøverbru | 2017 |
| Huvas Totalservice AS | Harøy | 2012 |
| HV Maskin & Utleie AS | Børsa | 2023 |
| HV Utleie AS | Husbysjøen | 2024 |
| Hvac Consulting AS | Sandnes | 2016 |
| Hvaler Hytteservice AS | Vesterøy | 2026 |
| Hvaler Open AS | Vesterøy | 2024 |
| Hvaler Vaktmesterservice AS | Skjærhalden | 2020 |
| Hvass AS | Oslo | 2004 |
| Hveem Og Fostad AS | Gjerdrum | 2024 |
| Hveem Veg Og Vedlikehold AS | Lena | 2020 |
| Hvem Eier Bilen Da | Porsgrunn | 2022 |
| Hvem-Eier-Bilen.No Da | Porsgrunn | 2022 |
| Hverdagshjelpen Da | Vestskogen | 2025 |
| Hverdagshjelpen Norge AS | Holmsbu | 2026 |
| Hverdagslykken Da | Drammen | 2025 |
| Hverdagsløft AS | Sortland | 2026 |