| Klemmavegen 14 AS | Real estate | 2014 |
| Klemmavegen 6 AS | Real estate | 2021 |
| Kleven Bygg & Anlegg AS | Construction | 2021 |
| Koiia AS | Wholesale & retail | 2022 |
| Krishna Restaurant Gol AS | Hospitality | 2026 |
| L Og T Da | Administrative & support | 2019 |
| L2 - L3 Fjelleiendom AS | Real estate | 2021 |
| Lampebutikken Hallingdal AS | Wholesale & retail | 2003 |
| Larsen & Nymoen Eiendom Da | Real estate | 2005 |
| Lauskar AS | Information & communication | 2016 |
| Lauvset Stølslag SA | Arts & recreation | 2016 |
| Layce AS | Other services | 2011 |
| Liahagen Invest AS | Construction | 2014 |
| Lie Sport Og Fritid AS | Wholesale & retail | 1994 |
| Lille Natur AS | Other services | 2023 |
| Lindra AS | Administrative & support | 2002 |
| Lindøkki AS | Real estate | 2023 |
| Liya Og Andreas AS | Wholesale & retail | 2023 |
| Made in Indiya AS | Hospitality | 2024 |
| Magnetun Eigedom AS | Real estate | 2014 |
| Magnetun Invest AS | | 2025 |
| Magnetun Maskin AS | Administrative & support | 2015 |
| Magnetun Vaktmestertjenester AS | Administrative & support | 2026 |
| Magnetunvegen Veglag SA | Real estate | 2017 |
| Magnus Narum AS | Water & waste | 1988 |
| Mai Solberg 151083 AS | Health & social care | 2016 |
| Markussen M AS | Agriculture & fishing | 2026 |
| Matmosfære AS | Manufacturing | 2020 |
| MB House AS | Hospitality | 2026 |
| Melbye Service AS | Professional & scientific | 2019 |
| Merethe Jonsens Holding AS | | 2026 |
| Metallco Hallingdal AS | Water & waste | 2014 |
| MG Everett AS | Arts & recreation | 2022 |
| Mi Cafe AS | Hospitality | 2022 |
| Min Oljereise AS | Health & social care | 2023 |
| Ming Beijing House AS | Hospitality | 2026 |
| Mint Design AS | Professional & scientific | 2014 |
| Mobilis AS | Health & social care | 2017 |
| Mountain Invest AS | | 2005 |
| Murmester Markussen AS | Construction | 2019 |
| Mythe Bil AS | Wholesale & retail | 2014 |
| Måleteknikk AS | Wholesale & retail | 2004 |
| Narum Holding AS | Water & waste | 2005 |
| Narveset Sameige Da | Real estate | 2005 |
| Navigol AS | Real estate | 2016 |
| Nes Gol Og Hemsedal Verering SA | Agriculture & fishing | 1968 |
| Ness Eiendom AS | Wholesale & retail | 1998 |
| Next Trafikkopplæring AS | Education | 2017 |
| Niwa Holding AS | | 2025 |
| Nordic Bang Sarey Co Ltd | | 2007 |
| Nordic Machine AS | Construction | 2013 |
| Nordre Brenno Småbruk Da | Agriculture & fishing | 2022 |
| Normontana SA | Wholesale & retail | 2022 |
| Norsan AS | Wholesale & retail | 2019 |
| Norsk Import AS | Wholesale & retail | 2013 |
| Nye Gol Holding 1 AS | Real estate | 2022 |
| Nye Gol Holding 2 AS | Real estate | 2022 |
| Nye Gol Invest AS | Real estate | 2022 |
| Nystølfjellet AS | Real estate | 2004 |
| Ohab Invest AS | Real estate | 2005 |
| Ojaka AS | Wholesale & retail | 2014 |
| Ok Eriksen Utleie AS | Construction | 2019 |
| Oko Eiendom Da | Mining & quarrying | 2008 |
| Ola Rustberggard AS | Construction | 2022 |
| Ooc AS | Construction | 2014 |
| Optiker Ness AS | Wholesale & retail | 1991 |
| Optima Media AS | Information & communication | 2014 |
| Orb Investor AS | Real estate | 2025 |
| Oset Høyfjellshotell AS | Hospitality | 1994 |
| Oski AS | | 1999 |
| Otto Christophersen AS | Real estate | 1991 |
| Pedersen-Bil AS | Wholesale & retail | 2025 |
| Pega Invest AS | Real estate | 2017 |
| Perigard Skog Ans | Agriculture & fishing | 1995 |
| Pers Eiendom AS | Hospitality | 1964 |
| Pers Hotell AS | Hospitality | 2004 |
| Pier AS | Professional & scientific | 2011 |
| Pizza Master AS | Hospitality | 2024 |
| PR Eiendom AS | Hospitality | 2005 |
| Privatmegleren Hallingdal AS | Real estate | 2024 |
| Pytten AS | Administrative & support | 2022 |
| Pytten Holding AS | | 2025 |
| Raw Capital AS | Professional & scientific | 2002 |
| RB Total Bygg AS | Construction | 2025 |
| RD Entreprenør AS | Construction | 2024 |
| Regnskapsteam Hallingdal AS | Professional & scientific | 1999 |
| Rese Kallin Holding AS | | 2025 |
| Resset Shop AS | Wholesale & retail | 2024 |
| Reventon Invest AS | | 2005 |
| Revisor Team AS | Professional & scientific | 2018 |
| RKF Holding AS | | 2024 |
| RKF Stålbygg AS | Construction | 2007 |
| RMC Invest AS | Construction | 2014 |
| Robru Handelslag SA | Wholesale & retail | 2000 |
| Roe Elektro AS | Construction | 2024 |
| Romøren Enterprises AS | Information & communication | 2023 |
| Rostad AS | Real estate | 2002 |
| Rotneim Samdrift Da | Agriculture & fishing | 2006 |
| Rotneim Skole Da | Real estate | 2022 |
| RPB Mur AS | Construction | 2021 |