| Grinaker Utvikling AS | Professional & scientific | 2006 |
| Gruer Invest AS | | 2024 |
| Gulbrandsen Holding AS | Real estate | 2005 |
| Hadar Eiendom AS | Real estate | 2024 |
| Hade Invest II AS | Financial services | 2005 |
| Hadeland Bilsenter AS | Other services | 1997 |
| Hadeland Bygg Og Element AS | Construction | 2018 |
| Hadeland Dental AS | Health & social care | 2018 |
| Hadeland Dyrekiropraktikk AS | Health & social care | 2025 |
| Hadeland Folkehøgskole SA | Education | 1947 |
| Hadeland Glass Og Vaktmesterservice AS | Construction | 2014 |
| Hadeland Idrettsfysioterapi Og Treningssenter AS | Arts & recreation | 2009 |
| Hadeland Maskindrift AS | Construction | 2007 |
| Hadeland Næringshage AS | Real estate | 2003 |
| Hadeland Pumpeservice AS | Construction | 2013 |
| Hadeland Rørservice AS | Construction | 2017 |
| Hadeland Service Og Økonomi AS | Professional & scientific | 2015 |
| Hadeland Stordyrpraksis AS | Professional & scientific | 2023 |
| Hadelandsnett Web Design Da | Manufacturing | 1999 |
| Hagens Graveservice AS | Construction | 2019 |
| Hallgeir Haga Invest AS | Real estate | 2014 |
| Haugli Pizza Og Grill AS | Hospitality | 2013 |
| Hbe Egenregi AS | Construction | 2019 |
| Hearme AS | Wholesale & retail | 2015 |
| Heid Holding AS | | 2026 |
| Heidi Nyhus Invest AS | | 2020 |
| Heim Studio Ans | Professional & scientific | 1986 |
| Heizomat Norge AS | Wholesale & retail | 2026 |
| Hellum Eiendommer Ans | Real estate | 2005 |
| Hellum Eiendommer AS | Real estate | 2011 |
| Hennung AS | Information & communication | 2020 |
| HEST1 Holding AS | Construction | 2015 |
| HEST1 Invest AS | Administrative & support | 2015 |
| HMD Invest AS | Real estate | 2013 |
| HMD Maskin AS | Administrative & support | 2015 |
| Hobbystua Ans | Wholesale & retail | 1992 |
| Hotelljordet Eiendom AS | Real estate | 2026 |
| Hovshagen AS | Agriculture & fishing | 2018 |
| Huang AS | Hospitality | 2025 |
| Huang Eiedom AS | Real estate | 2020 |
| Hus Og Hyttetjenester AS | Real estate | 2024 |
| Høgsaas AS | Professional & scientific | 2024 |
| Høgsaas Holding AS | Professional & scientific | 2024 |
| Høssø AS | Real estate | 2008 |
| Ingvald Holding AS | | 2020 |
| Innlandet Solenergi AS | Wholesale & retail | 2022 |
| Innlandet- Viken Takst AS | Professional & scientific | 2022 |
| J.G Transport & Entreprenør AS | Transport & logistics | 2021 |
| Japa Eiendom AS | Real estate | 2021 |
| Jaren Invest AS | Real estate | 2014 |
| Jenserud Foto Ans | Wholesale & retail | 2001 |
| Jenserud Holding AS | | 2021 |
| Karsten Thorstensen AS | Construction | 1994 |
| Kca Holding AS | | 2005 |
| Kolibri Healing AS | Education | 2023 |
| Kollen Consulting AS | Professional & scientific | 2000 |
| Krimo Eiendom AS | Real estate | 1990 |
| Krisk Invest AS | Financial services | 2015 |
| Kristin Anker Holding AS | Financial services | 2016 |
| Kulik Byggservice AS | Construction | 2023 |
| Kvam's Restaurant & Pizza Da | Hospitality | 1996 |
| Landbruk Og Verktøy AS | Wholesale & retail | 1983 |
| LGS Solution AS | | 2010 |
| Licato Eiendom AS | Real estate | 2012 |
| Liuhaugen Holding AS | Real estate | 2015 |
| LM Braaum AS | Construction | 2013 |
| Lohrim AS | | 2026 |
| Lokstallen Røykenvik AS | Hospitality | 2016 |
| Lygna Skisenter SA | Arts & recreation | 2013 |
| Lysaker Eiendom AS | Real estate | 2002 |
| Lysenstøen Invest AS | | 2021 |
| M Carlsen & Sønn AS | Construction | 2012 |
| Magister AS | Arts & recreation | 2013 |
| Malerfirma Fredriksen & Co. AS | Construction | 2021 |
| Masy Holding AS | | 2025 |
| Mat Fra Hadeland SA | Wholesale & retail | 2001 |
| MCM Shipping & Investment AS | Transport & logistics | 1985 |
| Mediementor AS | Professional & scientific | 2022 |
| Medus AS | Wholesale & retail | 2025 |
| Melami Invest AS | Real estate | 2012 |
| Metallservice AS | Manufacturing | 2012 |
| Moemo AS | Transport & logistics | 2014 |
| Mogador AS | Professional & scientific | 2005 |
| Morten Fredrikstad AS | Construction | 2008 |
| Mrocad AS | Professional & scientific | 2021 |
| MS Byggkonsult AS | Construction | 2022 |
| Myrvanggården AS | Real estate | 1964 |
| Nils Arild Thorstensen Ans | Wholesale & retail | 1984 |
| Nobelsgate 1 AS | Real estate | 1988 |
| Nordengen Invest AS | Real estate | 2014 |
| Nordli-Henriksen AS | Hospitality | 2014 |
| Nordre Brandbu Grunneierlag SA | Real estate | 1987 |
| Nordre Torv Brandbu AS | Real estate | 2018 |
| Norhed Eiendom Brandbu AS | Real estate | 2013 |
| Norsk Gran AS | Construction | 2021 |
| Norsk Varmeteknikk AS | Construction | 2018 |
| O M Hellum Skoforretning AS | Wholesale & retail | 1982 |
| Oba Eiendom AS | Real estate | 2011 |
| Ola Gunnar Kjos AS | Transport & logistics | 2011 |
| Operafest Røykenvik AS | Arts & recreation | 2018 |