| Hammarland Coating AS | Eikelandsosen | 2025 |
| Hammer Brothers Ltd | Pembroke Dock Sa72 6Nz Wales | 2020 |
| Hammer Eiendom AS | Vestfossen | 1998 |
| Hammer Tilhengersenter AS | Melhus | 1995 |
| Hammerfest Industriservice AS | Hammerfest | 2000 |
| Hammergata Holding AS | Prestfoss | 2011 |
| Hammerglass AB | Se-269 71 Förslöv | 2017 |
| Hammerlund Askvoll & Haugrud AS | Lillehammer | 1960 |
| Hamnaholmen AS | Værlandet | 2023 |
| Hamnvåg Gårdsmat Kjøttknoken Ba | Meistervik | 2004 |
| Hampidjan Advant AS | Søvik | 2011 |
| Hamran Eiendom AS | Snartemo | 2011 |
| Hamran Holding AS | Snartemo | 2011 |
| Hamran Sagbruk & Høvleri AS | Snartemo | 1998 |
| Hamran Snekkerverksted AS | Snartemo | 2011 |
| Hamre Elektronikk AS | Rolvsøy | 2013 |
| Hamre Service AS | Stavanger | 2017 |
| Hamroc AS | Lierstranda | 2024 |
| Hamstad Bakeri AS | Namsos | 2003 |
| Hamsund Holding AS | Stokmarknes | 2020 |
| Hamsund Tre AS | Hamarøy | 1993 |
| Hamtech Da | Stathelle | 2025 |
| Hamworthy Combustion Engineering Limited | Poole Dorset Bh17 0La | 2012 |
| Han Der Martin AS | Nesttun | 2026 |
| Hancock Holding AS | Nesøya | 2012 |
| Hand M Aid AS | Røyken | 2013 |
| Handelskompaniet Salg & Service AS | Sykkylven | 2012 |
| Handkraftverket Da | Olderdalen | 2022 |
| Handlaft & Tredesign AS | Alvdal | 2011 |
| Handler & Ot Products AS | Ler | 2013 |
| Hands AS | Steinstø | 2016 |
| Hands Down AS | Oslo | 2022 |
| Handy Møbelsnekker AS | Oslo | 2012 |
| Haneborg Gruppen AS | Frogner | 2006 |
| Hanem Service AS | Meisingset | 2025 |
| Hanmo AS | Trondheim | 1963 |
| Hanncraft AS | Rådal | 2015 |
| Hanohra Holding AS | Drammen | 2005 |
| Hans Fauske & Sønn AS | Valderøya | 1990 |
| Hans Lutz Maschinenfabrik GmbH | De-21465 Reinbek | 2024 |
| Hansa Borg AS | Kokstad | 1996 |
| Hansa Safety Services AS | Oslo | 2003 |
| Hansen & Arntzen Co AS | Stathelle | 1981 |
| Hansen & Justnæs AS | Kristiansand S | 1985 |
| Hansen Da | Kolvereid | 2005 |
| Hansen Eiendomsinvest AS | Blomsterdalen | 2006 |
| Hansen Holdings AS | Mysen | 1994 |
| Hansen Mek AS | Berlevåg | 1997 |
| Hansen Mekaniske AS | Blomsterdalen | 1997 |
| Hansen Og Eriksen Holding AS | Rolvsøy | 2008 |
| Hansen Protection AS | Moss | 1994 |
| Hansen Sveis & Montering AS | Rolvsøy | 1997 |
| Hansen Watch Co AS | Oslo | 2024 |
| Hansens Røkeri AS | Drammen | 1998 |
| Hansi Holding AS | Mo I Rana | 2008 |
| Hansines Bakeri AS | Ramberg | 2025 |
| Hanso Holding AS | Tomasjord | 2022 |
| Hansomplassen Gård AS | Sokna | 2005 |
| Hanssen AS | Evenskjer | 2024 |
| Hanssen Mek Verksted AS | Verdal | 1982 |
| Haplast AS | Furuflaten | 2026 |
| Haplast AS | Furuflaten | 2004 |
| Haplast Furuflaten AS | Furuflaten | 2026 |
| Haplast Sør AS | Furuflaten | 2026 |
| Happy Annette Holding AS | Paradis | 2020 |
| Happy Cheerbows AS | Holmestrand | 2016 |
| Happy Endings AS | Oslo | 2011 |
| Happy Sauna SRL Unipersonale | It-38037 Predazzo (Tn) | 2018 |
| Happykid Trampolinemontering AS | Rykkinn | 2026 |
| Hapro Electronics AS | Jaren | 2017 |
| Harald Grønvold AS | Ski | 2017 |
| Harald Grønvold Eiendom AS | Ski | 2017 |
| Harald Grønvold Holding AS | Ski | 2017 |
| Haram Møbelsnekkeri AS | Oslo | 2025 |
| Harasjøen Mekaniske AS | Vallset | 2004 |
| Hardanger Bakeri AS | Norheimsund | 2021 |
| Hardanger Betong AS | Øystese | 1991 |
| Hardanger Bryggeri AS | Øystese | 2020 |
| Hardanger Bygdeysteri AS | Øystese | 2020 |
| Hardanger Cideri AS | Nå | 1990 |
| Hardanger Flid Ba | Eidfjord | 1994 |
| Hardanger Saft Og Siderfabrikk AS | Ulvik | 2008 |
| Hardanger Seafood AS | Bømlo | 2020 |
| Hardanger Slipeverkstad AS | Ulvik | 2016 |
| Hardangerbonden AS | Hovland | 2024 |
| Harding AS | Norheimsund | 2012 |
| Harding Eigedom AS | Norheimsund | 2014 |
| Hardnor AS | Stord | 2007 |
| Hardt Vann AS | Vinstra | 2025 |
| Harlem Kjøtt AS | Borgenhaugen | 1997 |
| Harmoni Håndverksbakeri AS | Porsgrunn | 2018 |
| Harrisdesign Nuf | Rjukan | 2023 |
| Harry Pedersen Gull Og Sølvvare Eftf. AS | Bergen | 2024 |
| Harstad Haandtverksbryggeri AS | Harstad | 2014 |
| Harstad Innrammingsforretning AS | Harstad | 1997 |
| Harstad Mek Verksted AS | Harstad | 1995 |
| Harstad Skipsindustri AS | Harstad | 1988 |
| Harstad Tørrdokk AS | Harstad | 1981 |
| Harstad Varme Flis Og Steinsenter AS | Harstad | 2019 |
| Haski Ans | Hafrsfjord | 2002 |