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| Health by Nature AS | Arendal | 1996 |
| Healthine AS | Eidsvåg I Åsane | 2026 |
| Healthpack AS | Drammen | 2017 |
| Heas Ans | Gimse | 1991 |
| Heatwork Norway AS | Narvik | 1993 |
| Heavy Holding Spolka Z Ograniczona Odpowiedzialnoscia Nuf | Pl-92-412 Lodz | 2024 |
| Heavy Metall Mekaniske AS | Selbustrand | 2022 |
| Hechla Industrier AS | Vøyenenga | 2021 |
| Hed Marine AS | Tomrefjord | 2026 |
| Hedalm Anebyhus Holding AS | Ilseng | 2013 |
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| Hedda Hytter AS | Hedalen | 2001 |
| Heddal Hytter Ans | Notodden | 2002 |
| Hededanmark Nuf | Dk 8800 Viborg | 2012 |
| Hedersplassen AS | Veavågen | 2003 |
| Hedmark Alkemiske Destilleri AS | Løten | 2021 |
| Hedmark Eiendomsinvest AS | Osen | 2008 |
| Hedmark Låsservice AS | Hamar | 2000 |
| Hedmarken Sandblåserservice AS | Brumunddal | 2014 |
| Hedrich GmbH | De-35630 Ehringshausen | 2024 |
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| Hegdal Industribygg AS | Larvik | 2001 |
| Hegel AS | Oslo | 2017 |
| Hegelstad AS | Vigrestad | 2013 |
| Hegenscheidt MFD GmbH | De-41812 Erkelenz | 2021 |
| Heggem & Klykken AS | Røros | 2017 |
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| Hegn AS | Drøbak | 2023 |
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| Heia Holding AS | Mysen | 2022 |
| Heidal Laft Og Tradisjonsbygg AS | Nedre Heidal | 2012 |
| Heidal Ysteri AS | Heidal | 1998 |
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| Heidelberg Materials Norway AS | Oslo | 1999 |
| Heidelberg Materials Prefab Contiga Holding AS | Oslo | 1996 |
| Heidelberg Materials Prefab Norge AS | Moss | 1994 |
| Heidelberg Materials Sement Norge AS | Oslo | 1983 |
| Heidelbergcement AG | 69120 Heidelberg | 2007 |
| Heidelberger Druckmaschinen Aktiengesellschaft | De-69115 Heidelberg | 2025 |
| Heidelåna AS | Langevåg | 2005 |
| Heideman GmbH | De-48599 Gronau | 2024 |
| Heidi Og Monas Snekkeri Ans | Frogner | 1988 |
| Heidrun AS | Tynset | 2012 |
| Heiko Ackermann | 04683 Naunhof | 2009 |
| Heim Maritim AS | Valsøyfjord | 2024 |
| Heim Minibakeri AS | Skodje | 2026 |
| Heim Skipsservice AS | Valsøyfjord | 2020 |
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| Heimbaka AS | Vihals | 2021 |
| Heimbrent AS | Kvaløya | 2020 |
| Heimdal Chokolade AS | Arendal | 2022 |
| Heimebaka AS | Sveio | 2017 |
| Heimebrent AS | Vågå | 2013 |
| Heimgard Cpe AS | Lillestrøm | 2025 |
| Heimlaga Fra Fjelleng Ans | Bøstad | 2020 |
| Hein, Lehmann GmbH | De-47805 Krefeld | 2022 |
| Heindl Heinrich | Kristiansand S | 2001 |
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| Heis 1206 AS | Uvdal | 2021 |
| Heistjenesten AS | Oslo | 2004 |
| Heit AS | Lørenskog | 2024 |
| Hekka AS | Vinterbro | 2017 |
| Heklerier AS | Hosteland | 2022 |
| Hekta Sirdal AS | Tjørhom | 2021 |
| Hel Holding AS | Sokna | 2011 |
| Helander Design AS | Oslo | 1996 |
| Helberg Eiendom AS | Stjørdal | 1987 |
| Helberg Holding AS | Stjørdal | 2003 |
| Heldal Maskin AS | Lillesand | 2020 |
| Helen & Kristian AS | Sarpsborg | 2023 |
| Helen Systue AS | Trondheim | 2011 |
| Helgeland Båtservice AS | Lurøy | 2002 |
| Helgeland Ferdigbetong AS | Mo I Rana | 2022 |
| Helgeland Fjellrøyk AS | Korgen | 2021 |
| Helgeland Holding AS | Mo I Rana | 2004 |
| Helgeland Marinasystemer AS | Mo I Rana | 2007 |
| Helgeland Marineservice AS | Mo I Rana | 2017 |
| Helgeland Nødslakt AS | Korgen | 2011 |
| Helgeland Overflateteknikk AS | Sandnessjøen | 2013 |
| Helgeland Plast AS | Mo I Rana | 2004 |
| Helgeland Plastservice AS | Nesna | 2025 |
| Helgeland Stålmontasje Nuf | Hemnesberget | 2010 |
| Helgeland Sveis AS | Sømna | 2007 |
| Helgeland Sveiseindustrier Eiendom AS | Nesnastranda | 1997 |
| Helgeland Treforedling AS | Mosjøen | 2022 |
| Helgeland Ventilasjon AS | Mosjøen | 2013 |
| Helgeroa Spekevarer AS | Helgeroa | 1989 |
| Helgesen Maskinering AS | Notodden | 1999 |
| Helgådal Gårdsmat Da | Vuku | 2022 |
| Heli Print AS | Trondheim | 2023 |
| Heli Tek AS | Vuku | 2008 |
| Heli-Ex AS | Sandnes | 2017 |
| Heli-One (Norway) AS | Sola | 2000 |
| Helifuel AS | Førde I Hordaland | 1996 |
| Helitep Holding AS | Larvik | 2022 |
| Hell Sagbruk & Høvleri AS | Hell | 2005 |