| Hardang Heia Eiendom AS | Notodden | 2010 |
| Hardanger Bil Eigedom AS | Øystese | 2025 |
| Hardanger Brygge AS | Norheimsund | 2000 |
| Hardanger Brygge Utvikling AS | Norheimsund | 2015 |
| Hardanger Byggeselskap AS | Odda | 1937 |
| Hardanger Eiendom AS | Tertnes | 2019 |
| Hardanger Eiendom Og Utleie AS | Odda | 2021 |
| Hardanger Eiendomsselskap AS | Haugesund | 1996 |
| Hardanger Eiendomsutvikling AS | Odda | 2011 |
| Hardanger Eigedom AS | Odda | 1999 |
| Hardanger Eigedom Og Prosjekt Utvikling AS | Utne | 2017 |
| Hardanger Eigedomsmekling AS | Norheimsund | 2021 |
| Hardanger Fjordlandsby AS | Ænes | 2011 |
| Hardanger Fruktsamsal Eigedom AS | Grimo | 1968 |
| Hardanger Glass Og Lås AS | Nesttun | 2021 |
| Hardanger Gruppen AS | Odda | 2024 |
| Hardanger Industripark AS | Hovland | 2012 |
| Hardanger Maskinstasjon Eiendom AS | Øystese | 2015 |
| Hardanger Servicesenter AS | Odda | 2007 |
| Hardanger Utbygging AS | Bergen | 2006 |
| Hardanger Utleie AS | Odda | 2017 |
| Hardangerbadet Eigedom AS | Øystese | 2015 |
| Hardangerfjord Eiendom AS | Bergen | 2016 |
| Hardangerfjorden AS | Sandsli | 2020 |
| Hardangerfjordvegen 48 AS | Norheimsund | 2024 |
| Hardangerfrukt AS | Trondheim | 1937 |
| Hardangerheimen AS | Bergen | 2026 |
| Hardangerjøkulen AS | Oslo | 1990 |
| Hardangersenteret AS | Bergen | 2017 |
| Hardangervegen 136 AS | Hjellestad | 2022 |
| Hardangervegen 6 AS | Nesttun | 2018 |
| Hardangervegen 74 Seksjon 9 AS | Espeland | 2023 |
| Hardangervegen 871 AS | Espeland | 1988 |
| Hardangervegen AS | Kokstad | 2022 |
| Hardangervegen Næring AS | Bergen | 2016 |
| Hardangerveien 68 AS | Nesttun | 1993 |
| Hardangerveien 70 Seksjon 1 AS | Nesttun | 2015 |
| Hardangerveien 70 Seksjon 2 AS | Nesttun | 2015 |
| Hardangerveien 70 Seksjon 3 AS | Nesttun | 2015 |
| Hardangerveien 70 Seksjon 4 AS | Paradis | 2015 |
| Hardangerveien 70 Seksjon 5 AS | Paradis | 2015 |
| Hardangerveien 701 AS | Rådal | 2004 |
| Hardangerveien Eiendom AS | Stavanger | 2015 |
| Hardangervidda 63 AS | Haugastøl | 2026 |
| Hardangervidda Nasjonalparksenter AS | Rjukan | 2000 |
| Hardeland Invest AS | Etne | 2014 |
| Harder Eiendom AS | Harstad | 1980 |
| HARDEX2 AS | Knarrevik | 2008 |
| Hardhaus Eigedom AS | Bekkjarvik | 2020 |
| Harding Trading Holding AS | Grimstad | 2016 |
| Hardingetre Invest AS | Førresfjorden | 2019 |
| Hardlife Eiendom AS | Kleppestø | 2019 |
| Hardlife Holding AS | Kleppestø | 2015 |
| Hardnakke Invest AS | Trondheim | 2019 |
| Hardråde Investering AS | Stavanger | 2006 |
| Hardsjø Eigedom AS | Bekkjarvik | 2025 |
| Hardwood Holding AS | Mysen | 2023 |
| Hardy Eiendomselskap AS | Hjellestad | 1989 |
| Harehaugveien Utvikling AS | Hønefoss | 2024 |
| Harehopp AS | Oslo | 2021 |
| Hareid Elektriske AS | Hareid | 1950 |
| Hareid Rør Eiendom AS | Hareid | 1966 |
| Hareid Utmarkslag SA | Hjørungavåg | 1964 |
| Hareide Consulting AS | Oslo | 2020 |
| Hareidsdalen Hjortevald. 2016 SA | Hareid | 2006 |
| Harepus AS | Oslo | 2022 |
| Haresa AS | Eidsnes | 2019 |
| Harestad AS | Randaberg | 2013 |
| Harestad Bolig AS | Randaberg | 2013 |
| Harestadvika Holding AS | Vestre Åmøy | 2005 |
| Harestien AS | Sola | 2014 |
| Harestigen 5 AS | Son | 2020 |
| Harestua Eiendom AS | Trondheim | 2007 |
| Harestua Handelsbygg AS | Oslo | 2020 |
| Harestua Næringspark AS | Harestua | 2018 |
| Harestua Servise AS | Harestua | 1961 |
| Harestulia Utbygging AS | Harestua | 2019 |
| Harevadet Hyttegrend AS | Hornindal | 2010 |
| Harfallet Eiendom AS | Dal | 2004 |
| Harila Eiendom AS | Tromsø | 2010 |
| Harila Holding AS | Tromsø | 2009 |
| Harisen Bygg AS | Skjetten | 2025 |
| Harjo Eiendom AS | Sortland | 2018 |
| Harkestad AS | Tjeldstø | 2008 |
| Harkestad Bygg Og Eiendom AS | Tjeldstø | 2014 |
| Harkestad Holding AS | Oslo | 2016 |
| Harkestadvegen 2 AS | Bergen | 2014 |
| Harkmarkfjorden Båthuslag SA | Mandal | 2015 |
| Harlem AS | Rakkestad | 1975 |
| Harlem Eiendom AS | Rakkestad | 2013 |
| Harlem No AS | Oslo | 1983 |
| Harm Eiendom AS | Velfjord | 1989 |
| Harm Invest AS | Velfjord | 2003 |
| Harma Holding AS | Oslo | 2005 |
| Harmoni Helse AS | Arendal | 2025 |
| Harmoni Invest AS | Nesøya | 2021 |
| Harmoni Kapital AS | Trondheim | 2022 |
| Harmonibygg AS | Ålesund | 2019 |
| Harmonien Invest AS | Sandnes | 2021 |
| Harmony Homes AS | Rådal | 2019 |