| Grundify AS | Professional & scientific | 2021 |
| Gsas Holding AS | | 2024 |
| GT Maskin AS | Other services | 2012 |
| GT Nova AS | Construction | 2026 |
| Guem Eiendom AS | Real estate | 2021 |
| Gulaksveien Holding AS | Real estate | 2022 |
| Gulball AS | Arts & recreation | 2025 |
| Gullsmeden AS | Wholesale & retail | 2011 |
| Gunnar Olsen Invest AS | | 2021 |
| Gunnar Ottesen Holding AS | Real estate | 2008 |
| Guollas AS | Agriculture & fishing | 2023 |
| H & T Eiendom AS | Real estate | 2005 |
| H Heggheim AS | Real estate | 2005 |
| H Kristensen AS | Real estate | 2021 |
| H.B Eiendom AS | Real estate | 2019 |
| H.H Eiendom Alta AS | Real estate | 2013 |
| Habibs Lille Kjøkken AS | Real estate | 2005 |
| Habil Nord Eiendom AS | Real estate | 2000 |
| Habil Utbygging AS | Real estate | 2006 |
| Hagberg Holding AS | Real estate | 2010 |
| Hair Studio AS | Other services | 2024 |
| Hajo Invest AS | | 2025 |
| Hak Entreprenør AS | Construction | 2012 |
| Haldde Arkitekter AS | Professional & scientific | 2010 |
| Haldde Montessoriskole SA | Education | 2015 |
| Hammari AS | Construction | 2020 |
| Hammari Invest AS | | 2026 |
| Hamnefjell Vindkraft AS | Energy | 2012 |
| Hamnefjell Vindkraft Holding AS | Energy | 2015 |
| Hamnevoll Konsult Og Service AS | Professional & scientific | 2024 |
| Han Helge AS | Information & communication | 2023 |
| Handr Holding AS | | 2024 |
| Hans Ole Nyvoll AS | Construction | 2026 |
| Hansen Agentur Ans | Administrative & support | 1997 |
| Hao Holding AS | Financial services | 2011 |
| Harald Nilsen Holding AS | Construction | 2015 |
| Harald Nilsen Utbygging AS | Construction | 2009 |
| Harboen AS | | 2026 |
| Harila Autosenter AS | Wholesale & retail | 1997 |
| Harstad Panorama AS | Real estate | 2019 |
| Hast Nord AS | Transport & logistics | 2017 |
| Haugen Eiendom AS | Real estate | 2005 |
| Haugens Rør AS | Construction | 2011 |
| Haukenes Skog Og Maskin AS | Construction | 2023 |
| Havator OY Nuf | Administrative & support | 2026 |
| Havinor AS | Agriculture & fishing | 2022 |
| Havklynga SA | Other services | 2022 |
| Havleik Maritim AS | Agriculture & fishing | 2022 |
| Havnegata 18 AS | Real estate | 2023 |
| Havneveien 30 AS | Real estate | 2018 |
| Heartic Production AS | Information & communication | 2019 |
| Hedline AS | Professional & scientific | 2023 |
| Hege Monika Holding AS | Real estate | 2021 |
| Heggeli Motorsport AS | Professional & scientific | 2016 |
| Heggelund Service AS | Construction | 2025 |
| Heine Hudklinikk AS | Health & social care | 2026 |
| Heitmann Holding AS | Construction | 2008 |
| Heitmann Maskin AS | Construction | 2000 |
| Hekumi AS | Wholesale & retail | 2023 |
| Heleheim Invest AS | Real estate | 2022 |
| Henrix Holdings AS | | 2024 |
| HH Ventures AS | | 2026 |
| Hildes Fotklinikk AS | Health & social care | 2023 |
| Hjemmeluft Nord AS | Real estate | 2021 |
| Hjerteskribenten AS | Arts & recreation | 2017 |
| Hlmn Eiendom AS | Real estate | 2024 |
| Hlmn Holding AS | | 2024 |
| HN9 Holding AS | | 2025 |
| Hob Alta AS | Hospitality | 2025 |
| Hoge Ri AS | Professional & scientific | 2017 |
| Holding Ek AS | | 2025 |
| Holdling AS | | 2024 |
| Holm Entreprenør AS | Construction | 2012 |
| Holm Randa Holding AS | | 2021 |
| Holmen 81 AS | Real estate | 2021 |
| Holmen Gårds Og Naturbarnehage AS | Education | 2009 |
| Holmen Husky AS | Administrative & support | 2016 |
| Holmgren Begravelsesbyrå AS | Other services | 2021 |
| Holmgren Holding Og Invest AS | Real estate | 2020 |
| Holsmo AS | Professional & scientific | 2018 |
| Holten Transport AS | Transport & logistics | 2014 |
| Home Agentur AS | Wholesale & retail | 2019 |
| House of Sapmi AS | Professional & scientific | 2022 |
| HP Invest Alta AS | | 2020 |
| HS102 Invest AS | | 2024 |
| HT Eiendom Alta AS | Real estate | 2023 |
| Humleveien 13 Alta AS | Real estate | 2024 |
| Humleveien 17 AS | Real estate | 2020 |
| Humleveien 19 AS | Real estate | 2024 |
| Humornorge AS | Professional & scientific | 2021 |
| Hundefrisør Julia AS | Other services | 2025 |
| Hurtigtrykk Alta AS | Manufacturing | 1998 |
| Huseiertjenester AS | Administrative & support | 2012 |
| Huset Kvile AS | Real estate | 2000 |
| Huset Kvile Invest AS | Real estate | 2021 |
| Husfixerne AS | Real estate | 2024 |
| Huva Holding AS | | 2024 |
| HXR Eiendom AS | Real estate | 2015 |
| HXR Renholdsproffen AS | Administrative & support | 2016 |
| Hydra Teknikk AS | Wholesale & retail | 2020 |