| Helset Møbler AS | Wholesale & retail | 1955 |
| Helårsservice AS | Transport & logistics | 2025 |
| Hema Equity AS | Health & social care | 2025 |
| Hemmat AS | Administrative & support | 2013 |
| Hernes & Co AS | Wholesale & retail | 2022 |
| Hero Transport AS | Transport & logistics | 2026 |
| Herr Ballong AS | Wholesale & retail | 2007 |
| Herr Vold Holding AS | Financial services | 2018 |
| Hestia Bolig AS | Real estate | 2021 |
| Hibe AS | Construction | 2018 |
| Hijo Holding AS | Financial services | 2005 |
| Hippo Campus AS | Health & social care | 2013 |
| Histos AS | Administrative & support | 2017 |
| Hjem Eiendom AS | Real estate | 2020 |
| Hjulstad Invest AS | Wholesale & retail | 2022 |
| HK Sannerud AS | Wholesale & retail | 1995 |
| Hlijo AS | | 2024 |
| HLP AS | | 2026 |
| HNH AS | Real estate | 1975 |
| Hoel Eiendom AS | Real estate | 1976 |
| Hoel Invest AS | Real estate | 2003 |
| Hoel Sundholm Holding AS | | 2020 |
| Hoels Cafe Ans | Hospitality | 1996 |
| Hoels Café AS | Hospitality | 2023 |
| Hofmo Holding AS | Real estate | 2025 |
| Holdix AS | Real estate | 2020 |
| Holhar Invest AS | | 2023 |
| Holind Holding AS | | 2023 |
| Holland Atelier & Foto AS | Professional & scientific | 2014 |
| Holmseth Og Sagen AS | Professional & scientific | 2019 |
| Holtet Holding AS | Transport & logistics | 2019 |
| Holtet Transport AS | Transport & logistics | 2019 |
| Hongkong House AS | Hospitality | 2022 |
| Horgmo Jæger AS | Health & social care | 1999 |
| Horns Gate 13 AS | Real estate | 2022 |
| Hotelldrift Astoria Hamar AS | Hospitality | 2013 |
| Hotelldrift Hamar AS | Hospitality | 1999 |
| Hotpot Music AS | Arts & recreation | 2025 |
| HP33 Eiendom AS | Real estate | 2021 |
| HP33 Holding AS | Wholesale & retail | 2021 |
| HS Boligtomt 1 AS | | 2025 |
| HS Boligtomt 2 AS | | 2025 |
| HS Boligtomt 3 AS | | 2025 |
| HS Eie AS | Real estate | 2014 |
| HTH Invest AS | Transport & logistics | 2005 |
| HTH Kjøkkenforum Hamar AS | Wholesale & retail | 2012 |
| Hugin Rådgivning AS | Professional & scientific | 2017 |
| Hugleik & Røyndom AS | Health & social care | 2013 |
| Humlens Have AS | Health & social care | 2021 |
| Hummelvoll Holding AS | | 2020 |
| HUS1 Norge AS | Construction | 2011 |
| Husebyenga Terrasse AS | Real estate | 2013 |
| Husfliden Hamar Bunad AS | Wholesale & retail | 2000 |
| Hvil Vingene Dagspa AS | Other services | 2012 |
| Hvitveisen Barnehage SA | Education | 1989 |
| Hydro AS | Hospitality | 2022 |
| Hygge Hamar AS | Hospitality | 2021 |
| Hylland Holding AS | Real estate | 2006 |
| Hytter Og Hyttetomter AS | Wholesale & retail | 2014 |
| Hytteutleie AS | Real estate | 2019 |
| Håkamato AS | Real estate | 2011 |
| Håkon Laugerud AS | Professional & scientific | 2005 |
| Håkons Gate 12 AS | Real estate | 2025 |
| Håndtrykk AS | Professional & scientific | 2023 |
| Håvard Solheim AS | Information & communication | 2009 |
| Høiensaloddens Ekely AS | Real estate | 2017 |
| Høistad Invest AS | Administrative & support | 1998 |
| Høyer Innlandet AS | Wholesale & retail | 2022 |
| I Siste Liten AS | Financial services | 2005 |
| I-N Holding AS | Real estate | 2018 |
| Icedragon Studio AS | Information & communication | 2026 |
| Icon Retro AS | Hospitality | 2021 |
| Idea Vita Holding AS | Professional & scientific | 2008 |
| Ideal Eiendom AS | Real estate | 1971 |
| Ideal Trading Co AS | Wholesale & retail | 1976 |
| Idebolig Arkitekt Og Bygg AS | Real estate | 2023 |
| Idz Holding AS | | 2024 |
| Ilsetra AS | Administrative & support | 2002 |
| Imara Holding AS | | 2026 |
| Imcc AS | Professional & scientific | 2014 |
| Imperia Invest AS | | 2026 |
| In the Skies Ans | Wholesale & retail | 2025 |
| In-Bounds AS | Manufacturing | 2009 |
| Index Advisory AS | Real estate | 2016 |
| Industrigata 54 Lillehammer AS | Real estate | 1996 |
| Industrigata Tomt AS | Real estate | 2025 |
| Inexcess-Invest AS | | 2021 |
| Infinity Yogi AS | Education | 2020 |
| Infopages Da | Information & communication | 2013 |
| Ingeberglia Eiendomsutvikling AS | Real estate | 2020 |
| Initiator Holding AS | Professional & scientific | 2018 |
| Inito AS | Real estate | 2011 |
| Inkanto AS | Wholesale & retail | 2026 |
| Inn Bygg Og Anlegg AS | Construction | 2020 |
| Innfram AS | Information & communication | 2021 |
| Innkjøp Norge AS | Wholesale & retail | 2017 |
| Innlandet Eiendomsmegling AS | Real estate | 2023 |
| Innlandet Energi Holding AS | Public administration | 2019 |
| Innlandet Knives AS | Manufacturing | 2024 |
| Innlandet Legesenter AS | Health & social care | 2021 |