| Heroic Signatures Da | Oslo | 2017 |
| Herol Miljø AS | Stavern | 2018 |
| Herredsvela Invest AS | Hommersåk | 2010 |
| Herredsvela Maskin AS | Hommersåk | 2010 |
| Hersjøen Airport Village AS | Oslo | 2019 |
| Herskedal Marine Services AS | Syvde | 2017 |
| Herstel AS | Kristiansand S | 2025 |
| Hersvik Holding AS | Bergen | 2017 |
| Hertz Elektro AS | Drammen | 2022 |
| Hervik Eiendom AS | Hervik | 1989 |
| Hervik Små Jobb Da | Hervik | 2025 |
| Herøy Tjenestetorg AS | Herøy | 2023 |
| Heskestad AS | Borhaug | 2020 |
| Hessdalen Bygdeservice SA | Ålen | 1994 |
| HEST1 Invest AS | Brandbu | 2015 |
| Hesteskoen AS | Oslo | 2022 |
| Hetlivegen Skogsveglag Ba | Bjoa | 1990 |
| Hetu Holding AS | Heimdal | 2005 |
| Hewlett Packard International Bank | County Kildare W23 Y972 | 2004 |
| Hexagon Composites ASA | Ålesund | 1985 |
| Hexagon Technology AS | Ålesund | 2004 |
| Hexagon Technology H2 AS | Oslo | 2018 |
| Hexram AS | Oslo | 2026 |
| Heyerdal Stonehange Norway Ltd Nuf | Bergen | 2009 |
| Heøy Utleie AS | Orre | 2025 |
| HFF AS | Rennesøy | 2022 |
| Hfhc NV | Be-3320 Hoegaarden | 2023 |
| HFR Trailer Norge AS | Lillestrøm | 2020 |
| HFV Group AS | Seim | 2025 |
| HG Service AS | Stathelle | 2026 |
| HGS Bemanning AS | Bodø | 2022 |
| HH Consulting AS | Oslo | 2024 |
| HH Eiendomstjenester AS | Vikhammer | 2024 |
| HH Utleie Da | Melhus | 2024 |
| Hh-Consult | Dk-6710 Esbjerg V | 1995 |
| Hh-Service AS | Rennebu | 2025 |
| Hhmultiservice AS | Storsteinnes | 2024 |
| HHS AS | Jaren | 2021 |
| Hi North AS | Sandnessjøen | 2015 |
| Hi-Bo AS | Røyken | 2021 |
| Hi-Ren Renhold Service AS | Sandnes | 2021 |
| Hibas Holding AS | Vøyenenga | 2005 |
| Hibiscusreiser AS | Sande I Vestfold | 2010 |
| Hidden Booking AS | Kristiansand S | 2022 |
| Hidden Gems AS | Øystese | 2026 |
| Hide and Seek AS | Oslo | 2020 |
| High End 71 GR. N AS | Honningsvåg | 2018 |
| High Voltage Live AS | Laksevåg | 2025 |
| Highflow Adventures AS | Jostedal | 2025 |
| Highscore AS | Sandnes | 2021 |
| Highscore Kvadrat AS | Sandnes | 2021 |
| Hiking in Norway Ans | Eiksmarka | 2006 |
| Hiking Viking Irland Ltd | Co Wiclow | 2019 |
| Hilco Holding AS | Høylandsbygd | 2005 |
| Hildal Invest AS | Kråkstad | 2021 |
| Hilde Stoklasa AS | Oslo | 1991 |
| Hildes Renhold AS | Stavern | 2009 |
| Hiley Electric AS | Oslo | 2012 |
| Hill AS | Oslo | 1998 |
| Hillside (Support Services) Limited | Mt-Ta Xbiex Xbx 1120 | 2026 |
| Hilmar & Sønn AS | Oslo | 2004 |
| Hilton Eiendom AS | Kløfta | 2024 |
| Hilux 4RUNNER Klubb Norge Da | Moelv | 2018 |
| Himalayanxtri AS | Oslo | 2020 |
| Himla Rent Renhold AS | Oslo | 2026 |
| Himmelblå Utvikling AS | Ylvingen | 2019 |
| Himmelutleie AS | Stavanger | 2024 |
| Himsligt AS | Kopervik | 2015 |
| Hindøy Solutions AS | Hundvåg | 2025 |
| Hinnaland Holding AS | Tønsberg | 2005 |
| Hinnøya Renhold AS | Harstad | 2016 |
| Hinnøya Travel AS | Harstad | 2025 |
| Hipe-Holding AS | Karmsund | 2007 |
| Hire Norway AS | Oslo | 2007 |
| Hirth Himle Og Øvsthus Invest AS | Voss | 2013 |
| Hiserv GmbH | De-60528 Frankfurt Am Main | 2021 |
| Hiserv Norway AS | Gardermoen | 2021 |
| Historiske Fly AS | Fetsund | 2022 |
| Historiske Reiser Da | Oslo | 2000 |
| Histos AS | Hamar | 2017 |
| Hitachi Construction Machinery Europe N.V. | 4903Rh Oosterhout | 2018 |
| Hitachi Energy Poland Sp.Z.O.O. | Pl-04-713 Polen | 2022 |
| Hitachi Rail GTS France SAS | 78140 Velizy-Villacoublay | 2025 |
| Hitio International AS | Oslo | 2017 |
| Hitra Kystferie AS | Knarrlagsund | 2026 |
| Hitra Turistservice AS | Sandstad | 2013 |
| Hitra Turistservice Eiendom AS | Sandstad | 2013 |
| Hitra Turistservice Holding AS | Sandstad | 2013 |
| Hitra Utleie AS | Hitra | 2025 |
| Hjartdal Bil Og Maskin AS | Hjartdal | 1987 |
| Hjelle Reinhald AS | Stranda | 2020 |
| Hjellviks Hjelpetjenester AS | Valestrandsfossen | 2007 |
| Hjelmerud Maskin Og Transport AS | Slattum | 2006 |
| Hjelperen AS | Sola | 2002 |
| Hjelpsom AS | Vigra | 2002 |
| Hjelseng Gård AS | Stjørdal | 2015 |
| Hjem & Hage AS | Kleppe | 2008 |
| Hjem Og Hage Fikserne AS | Kirkenær | 2024 |
| Hjem Og Industrirenhold AS | Skien | 1997 |
| Hjem Og Kontor AS | Fjerdingby | 2022 |