| Lom Trebygg Eiendom AS | Real estate | 2009 |
| Lom Utleie AS | Administrative & support | 2021 |
| Lom Vaskeri AS | Other services | 2013 |
| Læshø Eiendom AS | Real estate | 2004 |
| Masco AS | Wholesale & retail | 1997 |
| Mauk Holding AS | | 2022 |
| Memurubu Turisthytte AS | Hospitality | 2000 |
| Milano Lom AS | Hospitality | 2020 |
| Mundhjeld AS | Real estate | 2025 |
| Murgarden AS | Real estate | 2006 |
| Møbler Fra Lom AS | Wholesale & retail | 2019 |
| Natur Opplevingar AS | Administrative & support | 1993 |
| Nedre Bøverdalen Grunneigarlag SA | Real estate | 2025 |
| Nils Haugen AS | Wholesale & retail | 1998 |
| Nilsbue AS | Real estate | 1999 |
| Nissegården AS | Hospitality | 2005 |
| Niventus Consult AS | Professional & scientific | 1994 |
| Nordal Eiendom AS | Real estate | 2005 |
| Nordal Maskin AS | Construction | 2007 |
| Nordal Servicesenter AS | Wholesale & retail | 1990 |
| Nordal Turistsenter Ans | Real estate | 1990 |
| Nordal Turistsenter AS | Hospitality | 1990 |
| Nordre Bakken AS | Education | 2023 |
| Norsk Mottaksdrift Ans | Health & social care | 2001 |
| Nye Brimi Bue AS | Hospitality | 2017 |
| Oddmund Fjeld AS | Construction | 1983 |
| Ogro Holding SA | Hospitality | 2008 |
| Olis Consult AS | Professional & scientific | 2026 |
| Opland Invest AS | Construction | 2003 |
| Opplæringskontoret Brimikjøken Rekruttering AS | Education | 2025 |
| Ottadalen Butikkdrift AS | Wholesale & retail | 2018 |
| Ottadalen Mølle SA | Manufacturing | 1976 |
| Ottaterminalen AS | Transport & logistics | 2004 |
| Prestkroken AS | Financial services | 2005 |
| R.V. Sandviken AS | Real estate | 1992 |
| Ramen Maskin AS | Construction | 2020 |
| Reidar Andersbakken AS | Construction | 2003 |
| Repp Bygg AS | Construction | 2024 |
| Repp Holding AS | Construction | 2024 |
| Ruler AS | Real estate | 2019 |
| Rusten Maskin Og Transport AS | Transport & logistics | 1993 |
| Rusten Mekaniske AS | Manufacturing | 2023 |
| Røisheim Eiendom AS | Hospitality | 1995 |
| Røisheim Hotell AS | Hospitality | 2006 |
| Salong Luggen Lom AS | Other services | 2017 |
| Sentral'N AS | Hospitality | 2018 |
| Skjåk, Kvamme Og Sørhage Transport AS | Transport & logistics | 2004 |
| Smak I Lom AS | Wholesale & retail | 2014 |
| Sparebank 1 Lom Og Skjåk | Financial services | 1873 |
| Spiterstulen Bre- Og Fjellføring AS | Arts & recreation | 2014 |
| Spiterstulen Drift AS | Hospitality | 2020 |
| Spiterstulen Eiendom AS | Hospitality | 2007 |
| Stamstad Samdrift Da | Agriculture & fishing | 2002 |
| Steinar Skaansar Og Sønn AS | Construction | 1980 |
| Stig Kjørren AS | Construction | 2013 |
| Stokk & Stein AS | Manufacturing | 1997 |
| Stupulvegen 3 AS | Real estate | 2019 |
| Suresokke AS | | 2019 |
| Svare Strev AS | Arts & recreation | 2023 |
| Sørhage Ans | Agriculture & fishing | 2004 |
| T Lund AS | Construction | 2025 |
| T.Lund Eiendom AS | Real estate | 2020 |
| Tannlege Ragnhild Langøygard AS | Health & social care | 2011 |
| Tannlege Ranghild Hesla Breie AS | Health & social care | 2014 |
| Tannpleier Eva Birgitta Stee AS | Health & social care | 2012 |
| Triton Eiendom AS | Real estate | 1996 |
| Tuppein Frisør AS | Other services | 2019 |
| Tyting AS | Professional & scientific | 2017 |
| Utspring AS | | 2016 |
| V Vinsrygg Anlegg AS | Construction | 2026 |
| Vamheim AS | Professional & scientific | 2024 |
| Veganlegget Liavegen Øvre SA | Real estate | 2024 |
| Veganlegget Nyrneshaugen - Grøna Elv SA | Real estate | 1971 |
| Veodalen Transport AS | Transport & logistics | 2005 |
| Verdigjenvinning Lom Og Skjåk AS | | 2013 |
| Visit Jotunheimen AS | Administrative & support | 2015 |
| Visus AS | Professional & scientific | 1991 |
| Wall Street Lom AS | | 2026 |
| X-Sport Magasin Norge Da | Information & communication | 2000 |
| Øystein Fosstuen AS | Construction | 2013 |