| Langåsfoss Maskinlag SA | Agriculture & fishing | 1997 |
| Lars Røstad AS | Wholesale & retail | 2010 |
| Lasse Kjønstad Holding AS | Financial services | 2017 |
| Lege Asle Arnstad AS | Health & social care | 2015 |
| Leiv Sand Transport AS | Transport & logistics | 2008 |
| Leja AS | | 2021 |
| Less Layers AS | Professional & scientific | 2024 |
| Leva-Fro AS | Health & social care | 1992 |
| Leva-Fro Eiendom AS | Real estate | 2021 |
| Leva-Fro Holding AS | Real estate | 2021 |
| Leva-Fro Marked AS | Health & social care | 2021 |
| Leva-Fro Service AS | Health & social care | 2021 |
| Levain the Bakery AS | Manufacturing | 2015 |
| Levanger Auto AS | Other services | 2017 |
| Levanger Avløserlag SA | Agriculture & fishing | 1984 |
| Levanger Bil Og Båt AS | Manufacturing | 2017 |
| Levanger Bilberging Ans | Transport & logistics | 2002 |
| Levanger Bilelektro AS | Other services | 2009 |
| Levanger Boligutvikling AS | Construction | 2014 |
| Levanger Bowling AS | Arts & recreation | 2000 |
| Levanger Camping AS | Real estate | 1987 |
| Levanger Dyreklinikk AS | Professional & scientific | 2014 |
| Levanger Eiendom AS | Real estate | 2013 |
| Levanger Elektro Service AS | Other services | 2014 |
| Levanger Elektro Service Eiendom AS | Other services | 1987 |
| Levanger Fot Og Hudpleie Ans | Wholesale & retail | 1993 |
| Levanger Fotterapi AS | Health & social care | 2020 |
| Levanger Golfsenter AS | Arts & recreation | 2024 |
| Levanger Grossist AS | Wholesale & retail | 2023 |
| Levanger Gym AS Helsestudio | Arts & recreation | 1982 |
| Levanger Hotelldrift AS | Hospitality | 2000 |
| Levanger Kjøpesenter AS | Real estate | 2000 |
| Levanger Klokker Og Smykker AS | Wholesale & retail | 2014 |
| Levanger Leker AS | Wholesale & retail | 2009 |
| Levanger Maxitaxi AS | Transport & logistics | 2012 |
| Levanger Mc-Teknikk Da | Wholesale & retail | 1988 |
| Levanger Mc-Utleie Ans | Administrative & support | 1998 |
| Levanger Rådhus AS | Real estate | 1987 |
| Levanger Rør AS | Construction | 2011 |
| Levanger Sentrum AS | Hospitality | 2021 |
| Levanger Slakteri AS | Real estate | 1984 |
| Levanger Specsavers AS | Wholesale & retail | 2017 |
| Levanger Takeaway Senter Da | Hospitality | 2004 |
| Levanger Taxi SA | Transport & logistics | 1947 |
| Levanger Treningssenter AS | Arts & recreation | 2021 |
| Levanger Varmesenter AS | Construction | 2013 |
| Levanger Vask Og Renseri AS | Other services | 2016 |
| Levanger-Avisa AS | Information & communication | 1996 |
| Levangeradvokatene Ans | Professional & scientific | 1992 |
| Levangerelva Grunneierlag | Real estate | 1963 |
| Levangersundet Marina SA | Other services | 2009 |
| Lia Consulting AS | Professional & scientific | 2026 |
| Liab Tymotyd AS | Professional & scientific | 2016 |
| Lille Thailand Levanger AS | Other services | 2016 |
| Linjepartner AS | Construction | 2013 |
| Linjepartner Holding AS | Energy | 2013 |
| LKB Invest AS | Wholesale & retail | 2022 |
| LKN Invest AS | | 2024 |
| Lokalmegleren NT AS | Real estate | 2011 |
| Lundh Invest AS | | 2013 |
| Lykkeegg AS | Agriculture & fishing | 2024 |
| Lykt Holding AS | | 2021 |
| Lysgård Verdal AS | Real estate | 2018 |
| Løvli Holding AS | Energy | 2016 |
| M. Okkenhaug Transport AS | Transport & logistics | 2016 |
| M. Rasmussen Holding AS | | 2026 |
| Madsen Invest AS | Real estate | 2019 |
| Magneten Jern & Farve AS | Wholesale & retail | 1989 |
| Makelele AS | Real estate | 2013 |
| Malermester Bjørås AS | Construction | 1997 |
| Manaslu Holding AS | Professional & scientific | 2024 |
| Manuell Terapi Klinikken AS | Health & social care | 2001 |
| Maritime Produkter Da | | 1988 |
| Mask Eiendom AS | Real estate | 2026 |
| Mat&Mat AS | Hospitality | 2018 |
| Matberg Trefelling AS | Agriculture & fishing | 2025 |
| Matuga Holding AS | | 2022 |
| Mayah Produkter AS | Wholesale & retail | 2021 |
| MBS Property Da | Real estate | 2009 |
| MCT Bygg AS | Construction | 2022 |
| Mea Event AS | Manufacturing | 2018 |
| Mea Invest AS | Real estate | 2012 |
| Meierigården Tannklinikk AS | Health & social care | 2017 |
| Meilan Holding AS | | 2021 |
| Merlin AS | Real estate | 1999 |
| Messi AS | Real estate | 2012 |
| Mesterrør AS | Construction | 1981 |
| Mi Casa Eiendom AS | Real estate | 2016 |
| Midlife AS | | 2025 |
| Midnor-Logistics AS | Transport & logistics | 2015 |
| Midt Norsk Rørinspeksjon AS | Professional & scientific | 2023 |
| Midt-Norge Slakteri AS | Manufacturing | 1994 |
| Midt-Norge Slakteri Holding AS | Real estate | 2001 |
| Mime & Freyr AS | Arts & recreation | 2022 |
| MKH Produksjoner AS | Arts & recreation | 2021 |
| MKM Bilservice AS | Other services | 2011 |
| Moafjæra 2B AS | Real estate | 2022 |
| Moan Bilsenter AS | Real estate | 1987 |
| Moan Legesenter AS | Health & social care | 2015 |
| Moan Stasjonsdrift AS | Wholesale & retail | 2002 |