| Gran Optikk AS | Wholesale & retail | 2005 |
| Gran Snødrift AS | Administrative & support | 2011 |
| Gran Sport AS | Wholesale & retail | 1987 |
| Gran Veisenter AS | Construction | 2010 |
| Granavolden Hotel & Gjæstgiveri AS | Hospitality | 2011 |
| Granhøi Alderspensjonat AS | Health & social care | 2003 |
| Granhøi Eiendom AS | Real estate | 2010 |
| Grendehuset Fjordvang SA | Real estate | 1984 |
| Grom IT Consulting AS | Wholesale & retail | 2020 |
| Gry Holding AS | Wholesale & retail | 2017 |
| Grymyr Vannverk SA | Water & waste | 1962 |
| Grønt Utemiljø Innlandet AS | Construction | 2020 |
| Guthorm Hoff AS | Administrative & support | 2012 |
| H. Sørli Hoel AS | | 2026 |
| Habilitering Hadeland AS | Health & social care | 2020 |
| Habilitering Holding AS | Health & social care | 2021 |
| Hadar AS | | 2008 |
| Hadeland Ark AS | Professional & scientific | 2019 |
| Hadeland Boligutvikling AS | Real estate | 2018 |
| Hadeland Byggservice Ans | Construction | 1992 |
| Hadeland Eiendomsdrift AS | Real estate | 1985 |
| Hadeland Eiendomsutvikling AS | Professional & scientific | 1985 |
| Hadeland Elektro AS | Construction | 2008 |
| Hadeland Elektronikk-Service AS | Other services | 1998 |
| Hadeland Lagerutleie AS | Transport & logistics | 2013 |
| Hadeland Og Omegn Forsikring AS | Financial services | 2016 |
| Hadeland Regnskap AS | Professional & scientific | 2012 |
| Hadeland Service Og Vedlikehold AS | Manufacturing | 2021 |
| Hadeland Taxi SA | Transport & logistics | 2005 |
| Hadeland Trafikkskole AS | Education | 2018 |
| Hadelandshagen AS | Professional & scientific | 2008 |
| Hallen Holding AS | Wholesale & retail | 2017 |
| Hals AS | Hospitality | 2019 |
| Ham Eiendom AS | Wholesale & retail | 2006 |
| Harestua Begravelsesbyrå AS | Other services | 2017 |
| Hasle Transport AS | Transport & logistics | 2025 |
| Haugen - Eiendom AS | Real estate | 2013 |
| Haugen Regnskap AS | Professional & scientific | 2013 |
| Haugen-Invest AS | Real estate | 2016 |
| Haugerud Consult AS | Professional & scientific | 2012 |
| Haugerud Invest AS | Real estate | 2005 |
| Hba Eiendom AS | Real estate | 2019 |
| He-Invest AS | Real estate | 2018 |
| Heier Invest AS | Financial services | 1999 |
| Helgaker Holding AS | | 2018 |
| Helmenbakken Holding AS | Financial services | 2016 |
| Helsekosten AS | Wholesale & retail | 2018 |
| Hotell Hadeland AS | Hospitality | 2001 |
| House Deal AS | Transport & logistics | 2026 |
| Huldreblom AS | Arts & recreation | 2023 |
| Hundens Utgangsstilling AS | Education | 2019 |
| Hvalbygården AS | Real estate | 1974 |
| Hvinden Gård Da | Real estate | 1995 |
| Håp Og Mestring I Hverdagen AS | Health & social care | 2017 |
| Håvelsrud Invest AS | | 2022 |
| I Helmen Utemiljø AS | Construction | 2021 |
| Iho Invest AS | Financial services | 2015 |
| Incentic AS | Real estate | 2005 |
| Increment Capital 1 AS | Real estate | 2014 |
| Increment Capital 1 Invest AS | Real estate | 2019 |
| Increment Capital II AS | | 2025 |
| Increment Capital III AS | Professional & scientific | 2023 |
| Increment Capital IV AS | | 2026 |
| Interiør Og Malefag AS | Manufacturing | 2011 |
| Ivar Helmen AS | Construction | 2016 |
| Ivmo AS | Professional & scientific | 2022 |
| Jernbanegaten 8 AS | Real estate | 2011 |
| Jes Helmenbakken Holding AS | Professional & scientific | 2024 |
| Johnet Eiendom AS | Real estate | 1996 |
| Jos - Eiendom AS | Real estate | 2017 |
| Jøtt Bra AS | Wholesale & retail | 2020 |
| K & a Holding AS | Financial services | 2005 |
| K. Lynnebakken AS | Construction | 2016 |
| Kada AS | Real estate | 2012 |
| Kjekshus Mat Og Drikke AS | Hospitality | 2022 |
| Kjeveortoped Tonje Vareide AS | Health & social care | 2018 |
| Klæstaddalen Kennel AS | Agriculture & fishing | 2025 |
| Konferansegården AS | Hospitality | 2004 |
| Kultur Og Uteliv Ans | Professional & scientific | 2017 |
| Kvernstad Trafikkskole AS | Education | 2019 |
| Lars L Holding AS | | 2019 |
| Lassie Og Garfield AS | Wholesale & retail | 2025 |
| LGS Holding AS | | 2019 |
| Lille Gullkorn Gullsmed AS | Wholesale & retail | 2006 |
| Lilleeng Motorservice AS | Other services | 2025 |
| Linstad Eiendom AS | Real estate | 2019 |
| Linstad Holding AS | Information & communication | 2016 |
| Lippert Aut. Trafikkskole AS | Education | 2008 |
| Lmo Holding AS | Real estate | 2005 |
| Luma Eiendom AS | Real estate | 2007 |
| Lund Digital AS | Professional & scientific | 2023 |
| Lunnerkollen AS | Real estate | 2023 |
| Lygna Arrangement AS | Arts & recreation | 2016 |
| Lygna Skisenter AS | Arts & recreation | 2020 |
| Lygnasæter AS | Hospitality | 1991 |
| Lynnebakka 5-7 AS | Real estate | 2024 |
| Lønnspartner AS | Wholesale & retail | 2003 |
| Maling Gran AS | Wholesale & retail | 2011 |
| Mamma Mia Restaurant AS | Hospitality | 2013 |
| Mamo Holding AS | Real estate | 2018 |