| Haringco AS | Trondheim | 2000 |
| Harley-Davidson Europe Ltd | 2614Lc Delft | 2005 |
| Harley-Utleie Ans | Kolvereid | 2000 |
| Harmoni Da | Hafrsfjord | 2002 |
| Harms Offshore Aht Taurus GmbH & Co. KG | De- 22767 Hamburg | 2012 |
| Harnex AS | Mandal | 2017 |
| Harold Eatmon Ministries International | Minnesota 55304 | 2017 |
| Harry B.Skistad Transport AS | Lonevåg | 1990 |
| Harsjøen Maskinutleie AS | Tynset | 2020 |
| Harstad Havbadstue AS | Harstad | 2021 |
| Harstad Maskinutleie AS | Harstad | 2026 |
| Harstad Utleie AS | Evenes | 2018 |
| Haru Invest AS | Trysil | 2020 |
| Harumi Renhold AS | Hommelvik | 2014 |
| Harvey Holding AS | Strømmen | 2020 |
| Harvey Nash IT Consulting N.V | Be-1702 Groot Bijgaarden | 2019 |
| Hasa Service AS | Fitjar | 2013 |
| Hashi Renholdsservice AS | Fredrikstad | 2013 |
| Hasmin AB | Se-523 41 Ulricehamn | 2018 |
| Hasselbakken AS | Oslo | 2018 |
| Hasselhaugen AS | Etne | 2024 |
| Hassia Verpackungsmaschinen GmbH | De-63691 Ranstadt | 2016 |
| Hast Holding AS | Oslo | 2011 |
| Hast Tak Og Fasadevask AS | Molde | 2022 |
| Hast Utleie AS | Heimdal | 2013 |
| Hastejobber AS | Trondheim | 2024 |
| Hatfield Oak Savings & Loan Limited | 1 Auckland | 2008 |
| Hati Holding AS | Skotterud | 2021 |
| Hatlevik Maskin AS | Ringebu | 2025 |
| Hatmyr Holding AS | Trondheim | 2016 |
| Hattavarre Drift AS | Oteren | 2012 |
| Hatterud Utleiesenter AS | Rudshøgda | 2020 |
| Haubiz Utleie AS | Kristiansand S | 2024 |
| Haubro & Tougaard Byg Aps | Son | 2013 |
| Haug Rallycross Team AS | Grua | 2021 |
| Haugaland Guideservice Da | Aksdal | 2005 |
| Haugaland Rengjøringsservice AS | Haugesund | 1982 |
| Haugaland Skyssbåt AS | Oslo | 2007 |
| Haugaland Stein & Tre AS | Torvastad | 2012 |
| Haugaland Vakt Service AS | Haugesund | 2016 |
| Haugaland Vaktmestertjeneste AS | Haugesund | 2021 |
| Haugan Maskinlag SA | Levanger | 2015 |
| Haugan Services AS | Skatval | 2025 |
| Haugateigen AS | Voss | 2005 |
| Haugberg Konsulenttjenester Nuf | Gamle Fredrikstad | 2015 |
| Hauge Utleigeservice AS | Valestrandsfossen | 2022 |
| Haugefarmen AS | Dalsøyra | 2023 |
| Haugen Auto Senter Ans | Larvik | 1982 |
| Haugen Bygdeservice AS | Bygstad | 2026 |
| Haugens Brøytetjenester AS | Kapp | 2018 |
| Haugentur AS | Oslo | 2010 |
| Haugesund Renhold AS | Haugesund | 2023 |
| Haugesund Skips Og Offshore Service AS | Haugesund | 1993 |
| Haugesundaren AS | Haugesund | 1998 |
| Haugholt Maskin AS | Sundebru | 2018 |
| Haugianer Eiendomsdrift AS | Tønsberg | 2023 |
| Haugianer Holding AS | Tønsberg | 2023 |
| Haugland Agri AS | Bryne | 2016 |
| Haugland Service AS | Os | 2020 |
| Haugo Sanering & Eiendom AS | Dalen | 2018 |
| Haugom & Hagen AS | Oslo | 2024 |
| Haugom Maskindrift Ans | Dovre | 1987 |
| Haugomvegen 5 AS | Overhalla | 2020 |
| Haugsdal Utleie AS | Knarrevik | 2025 |
| Haugset Experience AS | Storslett | 2025 |
| Haugslia Service AS | Vossestrand | 2012 |
| Haugsten AS | Ås | 2013 |
| Haukeli Fjellservice AS | Edland | 2024 |
| Haukenes Invest AS | Sandefjord | 2019 |
| Haukland Drift AS | Hamresanden | 2023 |
| Hauschildt Marine | Dk-9900 Skagen | 2012 |
| Hausken Invest AS | Hundvåg | 1996 |
| Hav Dyp AS | Stavanger | 2011 |
| Hav Opplevelser AS | Bjerkvik | 2020 |
| Havator AB | Se-95324 Haparanda | 2003 |
| Havator AS | Sandnes | 2002 |
| Havator OY Nuf | Alta | 2026 |
| Havbris AS | Frosta | 2023 |
| Haveglede AS | Kongshavn | 2021 |
| Havellen & Dahl AS | Tromsdalen | 2026 |
| Haverstad Eiendom AS | Sør-Fron | 2005 |
| Haverstad Holding AS | Sør-Fron | 2005 |
| Haverstad Maskin AS | Sør-Fron | 2015 |
| Haverstad Maskinutleie AS | Sør-Fron | 2015 |
| Havexpo AS | Kokstad | 2019 |
| Havfiskesenteret AS | Mehamn | 1995 |
| Havfruen Renhold AS | Oslo | 2005 |
| Havgartneren AS | Bergen | 2026 |
| Havglimt Utleie AS | Frei | 2025 |
| Havi Logistics Aps | 7100 Velje | 2015 |
| Havila Crew Limited | Gy1 3Rl Guernsey | 2023 |
| Havila Sirius AS | Fosnavåg | 2020 |
| Havklar AS | Skjerstad | 2026 |
| Havnedrift AS | Drammen | 2024 |
| Havneraas AS | Kristiansund N | 2013 |
| Havrafting.No Ans | Farstad | 2005 |
| Havrent AS | Dyrvik | 2025 |
| Havsalt Invest AS | Moss | 2011 |
| Havsjø AS | Sandnes | 2004 |
| Havstua AS | Florø | 2025 |