| Frekeplass Holding AS | | 2021 |
| Frodig Økonomi AS | Professional & scientific | 2014 |
| Fuglesundet AS | Real estate | 2022 |
| Fun Center Nes AS | Arts & recreation | 2023 |
| Furi Service AS | Other services | 1999 |
| Futhark Studios AS | Information & communication | 2021 |
| Gamle Vinnesgate 37-39 AS | Real estate | 1961 |
| Garnås Skog Og Maskin AS | Construction | 2020 |
| Garnås Vestre Allmenning Da | Arts & recreation | 2005 |
| Geeb Holding AS | Real estate | 2019 |
| Geilo VVS AS | | 1996 |
| Gepe Utvikling AS | Professional & scientific | 2005 |
| Gire Kraft AS | Energy | 2007 |
| Gneisvegen AS | Real estate | 2023 |
| Gnisten Vask Da | Administrative & support | 2015 |
| Gol Og Hallingdal Ventilasjon Service Og Blikkenslagerbedrift AS | Construction | 1989 |
| Gullingsrud Skogsdrift AS | Agriculture & fishing | 2003 |
| Gullingsrud Turbuss AS | Transport & logistics | 2012 |
| Gusan Invest AS | | 2021 |
| Gøtt Pøbb AS | Hospitality | 2013 |
| Gøtt-Øl AS | Manufacturing | 2015 |
| Hadding Elektro AS | Construction | 2013 |
| Haling Holding AS | Real estate | 2023 |
| Hallibakken Holding AS | | 2026 |
| Halling Drift AS | Wholesale & retail | 2023 |
| Halling Eiendom AS | Real estate | 2003 |
| Halling Holding AS | | 2021 |
| Hallingdal Assuranse AS | | 2017 |
| Hallingdal Betongsliping AS | Construction | 2021 |
| Hallingdal Bilsenter Holding AS | Wholesale & retail | 2017 |
| Hallingdal Eiendomsmegling AS | Real estate | 2021 |
| Hallingdal Fjelltjenester Da | Arts & recreation | 2010 |
| Hallingdal Hyttebygg AS | Construction | 2018 |
| Hallingdal Hytteutvikling AS | Construction | 2011 |
| Hallingdal Kjøl & Frys AS | Construction | 2020 |
| Hallingdal Lokalmat Senter AS | Manufacturing | 2015 |
| Hallingdal Murerforretning AS | Construction | 2002 |
| Hallingdal Trefelling AS | Agriculture & fishing | 2022 |
| Hallingdal Tømrerlaug AS | Construction | 2020 |
| Hallingdal Varme & Sanitær AS | Construction | 2001 |
| Hallingdal Varmepumpeservice AS | Construction | 2025 |
| Hallingdal Ved & Kubbestolmakarlag AS | Construction | 2026 |
| Hallingdalselva Fiskeforvaltning I Nesbyen SA | Arts & recreation | 2020 |
| Hallinghytter AS | Construction | 2020 |
| Hallingmast AS | Construction | 1997 |
| Hallingskigard AS | Construction | 2016 |
| Hallingsko | Wholesale & retail | 1980 |
| Hallingstølen AS | Real estate | 2025 |
| Hallingtech AS | Professional & scientific | 2021 |
| Haraldseth Fjelleiendom AS | Real estate | 2017 |
| Hasi Invest AS | Wholesale & retail | 2002 |
| Hauga-Skogen Ans | Agriculture & fishing | 2004 |
| HAUGO1 AS | | 2025 |
| Heilt Bygg AS | Real estate | 2019 |
| Heilt Holding AS | Real estate | 2020 |
| Heimstølvegen SA | Real estate | 2019 |
| Helnessund Skjærgårdspark AS | Real estate | 2006 |
| Hemsedal Eiendom AS | Wholesale & retail | 2018 |
| Hjalland Graveservice AS | Construction | 2020 |
| Holm Bygg Og Maskin AS | Construction | 2002 |
| Holte Estate AS | Real estate | 2025 |
| Hovde Fysioterapi AS | Health & social care | 2023 |
| Hovde Maskin AS | Construction | 2019 |
| Høva Bruvollen Da | Agriculture & fishing | 2022 |
| Høva Eiendom AS | Real estate | 2017 |
| Jamo Engros AS | Wholesale & retail | 1998 |
| Jatho Graveservice AS | Construction | 2018 |
| Jeløy Eiendomsselskap AS | Real estate | 2017 |
| JL Hyttebyggeren AS | Real estate | 2012 |
| Johja AS | Professional & scientific | 2017 |
| John Rødningen AS | Real estate | 2005 |
| Jorde Eiendom AS | Wholesale & retail | 1997 |
| Jordesbaklia Skog Da | Agriculture & fishing | 2003 |
| Jordeslivegen SA | Real estate | 2020 |
| Jørgen Flesvik AS | Construction | 2010 |
| K Bråten AS | Professional & scientific | 2025 |
| K Bråten Holding AS | | 2025 |
| Karl Inge Løken AS | Construction | 2013 |
| Kasi Invest AS | Wholesale & retail | 1995 |
| Kaspersen Transport AS | Transport & logistics | 2025 |
| Kiip.App AS | Information & communication | 2023 |
| Klar Hytte & Vaktmestertjenester AS | Administrative & support | 2015 |
| Kloakkrenseanlegget Mykingområdet SA | Water & waste | 1995 |
| Klype Varme & Sanitær AS | Construction | 1984 |
| Klype Ved Og Hytteservice AS | Administrative & support | 2023 |
| KN Kompetanse AS | Administrative & support | 2018 |
| Knut Aalton AS | Administrative & support | 2023 |
| Knut R. Svenkerud AS | Professional & scientific | 2022 |
| Krulleskogen Da | Agriculture & fishing | 2009 |
| Krusedokken Bygg AS | Construction | 2017 |
| Kulturkafeen Valhall AS | Hospitality | 1983 |
| Kvernsletten AS | Agriculture & fishing | 2022 |
| Kåre Skailand AS | Construction | 2005 |
| L H Graveservice Ans | Construction | 1990 |
| Langedragsetern Hyttefelt AS | Real estate | 2019 |
| Langeland Livgard Holding AS | Real estate | 2021 |
| Lars Rødningen AS | Financial services | 2005 |
| Legepraksis El-Hage,M AS | Health & social care | 2011 |
| Leif Maskin AS | Wholesale & retail | 2012 |
| Li's Fortuna China Restaurant & Kafè AS | Hospitality | 2013 |