| L. a. Lund AS | Real estate | 2005 |
| L. Bygballe Holding AS | Financial services | 2005 |
| L. E. Trade AS | Wholesale & retail | 2024 |
| L. Engebretsen AS | | 2019 |
| L. Gill-Johannessen AS | Transport & logistics | 1974 |
| L.E.T.T. AS | Hospitality | 2013 |
| L.L. Oslo AS | Hospitality | 2016 |
| L.O.S. AS | | 2023 |
| L.U.C.Y. Holding AS | | 2019 |
| L1 Holding AS | Financial services | 2008 |
| L16 Seksjon 3 AS | Real estate | 2025 |
| L17 Næring AS | Real estate | 2024 |
| L18 Holding AS | | 2019 |
| L2 Arkitekter AS | Professional & scientific | 1987 |
| L2 Invest AS | | 2026 |
| L22 Bakst AS | Real estate | 2026 |
| L28 Panorama AS | Real estate | 2020 |
| L2X AI AS | Information & communication | 2025 |
| L70 Bolig AS | Real estate | 2018 |
| L70 Næring AS | Real estate | 2018 |
| L79 Industriservice AS | Construction | 2020 |
| La Bakeri De Jean AS | Hospitality | 2024 |
| La Barberia AS | Other services | 2025 |
| La Bella Vita AS | Wholesale & retail | 2023 |
| La Belle Flør AS | Wholesale & retail | 2019 |
| La Bodeguita Drift AS | Hospitality | 2025 |
| La Bodeguita Norway AS | Wholesale & retail | 2022 |
| La Canaria 614 AS | Real estate | 2012 |
| La Canaria 908 AS | Professional & scientific | 2000 |
| La Cave Palmer AS | Hospitality | 2022 |
| La Cetta AS | Hospitality | 2017 |
| La Chance AS | Other services | 2023 |
| La Cosmetica AS | Wholesale & retail | 2012 |
| La Cresta Drive AS | | 2021 |
| La Crêperie AS | Hospitality | 2026 |
| La Cucina AS | Hospitality | 2012 |
| La Cuisine AS | Wholesale & retail | 2018 |
| La Danse AS | Wholesale & retail | 1980 |
| La Dolca Mia AS | Hospitality | 2017 |
| La Familia Empanadas Fabrikk AS | Hospitality | 2023 |
| La Festa AS | Hospitality | 2017 |
| La Formula Limited | Professional & scientific | 2020 |
| La International Construction Montage AB | Construction | 1995 |
| La Investment Group AS | Arts & recreation | 2021 |
| La Krisma AS | Health & social care | 1998 |
| LA LUNA LÆRVERKSTED ANS Vigdis Morken og Ugo Facconi | Wholesale & retail | 1986 |
| La Luna Sol Og Video Shahrokhy & Storsveen Ans | Arts & recreation | 1989 |
| La Manga Sea Shell AS | | 2004 |
| La Mani AS | Real estate | 2011 |
| La Mayor AS | Hospitality | 2020 |
| La Mexicana Osf AS | Hospitality | 2025 |
| La Padre Invest AS | | 2024 |
| La Petite Tomate Holding AS | | 2022 |
| La Piada AS | Hospitality | 2014 |
| La Pistache AS | Wholesale & retail | 2026 |
| La Quête IV AS | | 2019 |
| La Rent Og Vask AS | Administrative & support | 2026 |
| La Rørservice AS | Construction | 2025 |
| La Selva Gartneri AS | Wholesale & retail | 2026 |
| La Service AS | Other services | 2022 |
| La Sosta AS | Hospitality | 1997 |
| La Strada AS | Financial services | 2016 |
| La Såda AS | Hospitality | 2012 |
| La Takpleie AS | Construction | 2022 |
| La Tendenza AS | Information & communication | 2020 |
| La Torre Obras Holding Limited | | 2022 |
| La Torre Obras Limited | Wholesale & retail | 2021 |
| La Tutti AS | Hospitality | 2021 |
| La Vera AS | Hospitality | 2024 |
| La Vikinga AS | Wholesale & retail | 2020 |
| La Villa Arte Properties AS | Real estate | 2018 |
| La-Sa Båt Og Motor AS | Wholesale & retail | 1984 |
| La-Sa Maskin AS | Wholesale & retail | 2022 |
| Laa Holding AS | Real estate | 2012 |
| Laab AS | Real estate | 2007 |
| Laache Ans | Professional & scientific | 1981 |
| Laake AS | Real estate | 2014 |
| Laatasveien Drift AS | Real estate | 2005 |
| Laaveg Invest AS | | 2021 |
| Lab Drift AS | Hospitality | 2022 |
| Lab Pharma AS | Wholesale & retail | 2011 |
| Lab Tec AS | Wholesale & retail | 2004 |
| LAB17 AS | Information & communication | 2021 |
| LAB17 Technology AS | Information & communication | 2021 |
| LAB42 AS | Professional & scientific | 2025 |
| Laba Holding AS | | 2018 |
| Laban Eiendom AS | Real estate | 2017 |
| Labben Hund Og Katt AS | Wholesale & retail | 2009 |
| Labcraft AS | Information & communication | 1995 |
| Labcraft Innovation AS | Information & communication | 1993 |
| Labek AS | Real estate | 2013 |
| Label AS | Wholesale & retail | 1998 |
| Label Laundry AS | Real estate | 2021 |
| Label Music Da | Arts & recreation | 2016 |
| Label Properties AS | Real estate | 2016 |
| Label You AS | Professional & scientific | 2025 |
| Laber Holding AS | | 2020 |
| Lablomst AS | Wholesale & retail | 2011 |
| Labonacom Ltd Nuf | Information & communication | 2013 |
| Laborate Da | Education | 2025 |