| Lars Joakim Nilsson AS | Financial services | 2018 |
| Lars Jonas Hemsløjd | Wholesale & retail | 1997 |
| Lars Leganger Holding AS | | 2024 |
| Lars Mellomrom Hansen AS | Information & communication | 2026 |
| Lars Monsen AS | Education | 2005 |
| Lars Monsen Brand AS | Professional & scientific | 2024 |
| Lars Monsen Wild AS | Information & communication | 2026 |
| Lars Mork Invest AS | | 2024 |
| Lars Nielsen Eiendom AS | Real estate | 2017 |
| Lars Ole Høiby Rådgivning AS | Professional & scientific | 2016 |
| Lars Stenersen AS | Professional & scientific | 2010 |
| Lars Støvland AS | Arts & recreation | 2019 |
| Lars Søreide AS | Wholesale & retail | 1987 |
| Lars Tobias Holding AS | Professional & scientific | 2022 |
| Lars Tovik AS | Information & communication | 2013 |
| Lars Yngve Ege Holding AS | Financial services | 2005 |
| Larsaabakken Holding AS | | 2023 |
| Larsbråten Boligsamvirke SA | Real estate | 1973 |
| Larsen & Moore Holding AS | Construction | 2019 |
| Larsen & Moore Invest AS | Real estate | 2019 |
| Larsen Consult AS | Information & communication | 2008 |
| Larsen Corporate AS | | 2023 |
| Larsen Eiendom AS | Real estate | 1995 |
| Larsen Eiendom AS | Construction | 1988 |
| Larsen Oil & Gas AS | Professional & scientific | 1993 |
| Larsen Restaurant AS | Hospitality | 2021 |
| Larsen Vest AS | Real estate | 2017 |
| Larsen-Bryne Holding AS | | 2022 |
| Larsen-Lund AS | | 2024 |
| Larsenal AS | | 2025 |
| Larsenq AS | | 2022 |
| Larsens Pengebinge AS | | 2026 |
| Larsens Ve Og Vel AS | Financial services | 2016 |
| Larshus AS | Transport & logistics | 1988 |
| Larsjohans Invest AS | Real estate | 2017 |
| Larson-Juhl AS | Wholesale & retail | 1996 |
| Larsson Entreprenør AS | Construction | 2025 |
| Larsson Secure AS | Information & communication | 2019 |
| Larstorp AS | Financial services | 2014 |
| Larsåsen Holding AS | | 2023 |
| Larum AS | Financial services | 1999 |
| Larum Gadus AS | | 2020 |
| Larvik Havnesenter AS | Real estate | 2018 |
| Larvik Line AS | Transport & logistics | 2013 |
| Larviksgt 14 AS | Real estate | 2005 |
| Las Casas AS | Real estate | 2002 |
| Las Colinas Nordic AS | Professional & scientific | 2025 |
| Las Invest AS | Information & communication | 2005 |
| Las Meninas AS | Wholesale & retail | 2012 |
| Las Ruinas AS | Hospitality | 2022 |
| Las Solutions A.E. Nuf | Information & communication | 2025 |
| Las Veg AS | Financial services | 2022 |
| Lasanta AS | Professional & scientific | 2024 |
| Lasarona AS | Arts & recreation | 2024 |
| Lasarus AS | Professional & scientific | 2020 |
| Lasborg Invest AS | | 2021 |
| Lascon AS | Professional & scientific | 2014 |
| Lasenby Holding AS | | 2025 |
| Laser City AS | Health & social care | 2014 |
| Laserlab AS | Other services | 2025 |
| Laserlegene AS | Health & social care | 2022 |
| Lash Experts Da | Other services | 2015 |
| Lash Look AS | Wholesale & retail | 2016 |
| Lashes by Kasja AS | Other services | 2014 |
| Lashes by Vanesa Jarovic AS | Other services | 2017 |
| Lasius AS | Information & communication | 2018 |
| Laska Invest AS | | 2025 |
| Laska Ventures AS | Information & communication | 2026 |
| Laskowski Butikkdrift AS | Wholesale & retail | 2025 |
| Laspo AS | Financial services | 2017 |
| Lasse Amundsen Invest AS | Real estate | 2005 |
| Lasse AS | Information & communication | 2021 |
| Lasse Damsund Eiendom AS | Real estate | 2005 |
| Lasse Lyhne AS | Professional & scientific | 2024 |
| Lasse S Invest AS | Wholesale & retail | 2020 |
| Lasserakkar AS | | 2024 |
| Lasso Digital AS | Information & communication | 2024 |
| Lasson Holding AS | | 2026 |
| Last Call AS | Information & communication | 2017 |
| Last Man Standing AS | Financial services | 2016 |
| Last Touch Service AS | Construction | 2023 |
| Last Woman Standing AS | Financial services | 2018 |
| Lastan Eiendom AS | Real estate | 2015 |
| Lastebil Logistikk AS | Transport & logistics | 2021 |
| Lastebil Transport Sentral AS | Transport & logistics | 2018 |
| Lasth AS | | 2020 |
| Late Bygg AS | Construction | 2013 |
| Late Night Music AS | Information & communication | 2017 |
| Latebro AS | Information & communication | 2016 |
| Later AS | | 2023 |
| Lathyrus AS | Financial services | 1996 |
| Laticrete Nordic AS | Wholesale & retail | 2003 |
| Latin Link AS | Real estate | 2005 |
| Latinamerikansk Senter Ans | Wholesale & retail | 1995 |
| Latitude 33 AS | | 2025 |
| Latnor AS | Construction | 2020 |
| Lato Invest AS | Real estate | 2009 |
| Latpro 2 AS | Real estate | 2011 |
| Lau Holding AS | | 2025 |
| Laud Produkter AS | Wholesale & retail | 2013 |