| Ac Consult AS | | 2010 |
| Bien Butikkdrift AS | Wholesale & retail | 2016 |
| Bing Bong Holding AS | Information & communication | 2025 |
| Bjødnastølen Vann Og Avløp AS | Water & waste | 2019 |
| BP Utleie AS | Real estate | 2013 |
| Bråtalien Regnskap AS | Professional & scientific | 2021 |
| Byggmester Brevik & Co AS | Construction | 2013 |
| Catenaria AS | Manufacturing | 2002 |
| Commandeer Capital AS | Financial services | 2021 |
| Dansarfeten AS | Real estate | 2011 |
| Dvale Fjellstue AS | | 2023 |
| Ebriola AS | Wholesale & retail | 2012 |
| Elgvegen Vann- Og Avsløp SA | Water & waste | 2018 |
| Elsikkerhet Hallingdal AS | Professional & scientific | 2015 |
| Erh Eiendom AS | Real estate | 2014 |
| Espegard Elektro AS | Construction | 2010 |
| Evjen Og Storlien Da | Construction | 2006 |
| Fjellmøbler AS | Manufacturing | 2014 |
| Formura Holding AS | | 2025 |
| Fynor AS | Real estate | 2024 |
| Garden Oppheim AS | Agriculture & fishing | 2011 |
| Hagastølen AS | Professional & scientific | 2020 |
| Hallingcast AS | Professional & scientific | 2023 |
| Hallingdal Betong AS | Manufacturing | 1993 |
| Hallingdal Formidling AS | Other services | 2015 |
| Hallingdal Hytteservice AS | Construction | 1987 |
| Hallingdal Konstruksjoner AS | Professional & scientific | 2024 |
| Hallingdal Næringshage AS | Professional & scientific | 1991 |
| Haugo-Finnesgarden-Grov Skogsveiforening | Real estate | 2006 |
| Hb-Ok Lya Eiendom AS | Manufacturing | 1995 |
| Hefte Eiendom AS | Real estate | 2018 |
| Hefte Løstegård Vann Og Avløp Da | Water & waste | 2002 |
| Hefte Maskin AS | Construction | 2015 |
| Heimlivegen AS | Mining & quarrying | 2021 |
| Hjemmebu Ans | Real estate | 2025 |
| Installatør Olav Jordet AS | Construction | 2010 |
| J Hermansen Holding AS | | 2024 |
| Kantefølflak AS | Wholesale & retail | 2019 |
| Knaldre AS | Construction | 2005 |
| Krækkja 1161 AS | Hospitality | 2019 |
| Kupp Invest AS | | 2025 |
| Kvalitet & Sikkerhet Rådgivning AS | Health & social care | 1991 |
| Liha AS | Construction | 2005 |
| Makalaus Mat AS | Real estate | 2016 |
| Mest Entreprenør AS | Construction | 2023 |
| MO1 Maskin AS | Construction | 2021 |
| Nistugu AS | Real estate | 1995 |
| Norwegian Food Trade AS | Manufacturing | 2024 |
| Nuyou Helse AS | Health & social care | 2021 |
| Nærbutikken På Torpo AS | Wholesale & retail | 2004 |
| O. Bråten AS | Administrative & support | 2021 |
| Oddvar Øygard AS | Mining & quarrying | 2003 |
| Ok Ventilasjon AS | Construction | 1994 |
| Oland Eiendom AS | Real estate | 2002 |
| Ole Jonny Jorde Eiendom AS | Real estate | 2005 |
| Ole Jonny Jorde Holding AS | Real estate | 2005 |
| Opheim Utmarkslag SA | Real estate | 1995 |
| Oppheimsåsen AS | Real estate | 2017 |
| Oppheimsåsen Vatn Og Avløp AS | Water & waste | 2018 |
| Ordner Seg Det Holding AS | | 2026 |
| Port Royal AS | | 2022 |
| Pålset Skogsbilveg SA | Real estate | 2012 |
| Ridøla Kraft AS | Energy | 2007 |
| Sireåne Kraft Da | Energy | 2003 |
| Sjåheimvegen 30 AS | Real estate | 2024 |
| Skurdalsvegen Eiendom AS | Real estate | 2005 |
| Sletto AS | Real estate | 2005 |
| Smestad Invest AS | Real estate | 2005 |
| Storefeten AS | Professional & scientific | 2015 |
| Svare Holding AS | Arts & recreation | 2005 |
| Syningen Eiendom AS | Arts & recreation | 2003 |
| Syningen Infrastruktur AS | Real estate | 2020 |
| Syningen Vann Og Avløp AS | Water & waste | 2019 |
| Thunes Eiendom Da | Real estate | 2003 |
| Torpo Biovarme AS | Energy | 2025 |
| Torpomoen Eigedom AS | Real estate | 2003 |
| Torpomoen Utvikling AS | Education | 2005 |
| Torpovegen 553 AS | Real estate | 2016 |
| Torpoåsen AS | Real estate | 2020 |
| Totalberedskap AS | Education | 2025 |
| Tretterud Eiendom AS | | 2016 |
| Tuftebakken Hytter AS | Real estate | 2011 |
| Uhlen Drift Og Vedlikehold AS | Manufacturing | 2024 |
| Uhlen Maskin AS | Construction | 2022 |
| Upheims Fremadstormende Kapitalister AS | Financial services | 2017 |
| Upstream Aqua AS | Agriculture & fishing | 2023 |
| Upstream AS | Wholesale & retail | 2019 |
| Upstream Energy AS | Energy | 2025 |
| Ustaosvegen 281 AS | Real estate | 2025 |
| V. Liahagen AS | Construction | 2020 |
| Venås Eiendom AS | Real estate | 2007 |
| Vermelivegen SA | Real estate | 2022 |
| Viko Invest AS | Real estate | 2006 |
| Øygard AS | Mining & quarrying | 2007 |