| Leinslie AS | Professional & scientific | 2012 |
| Leira 6 Eiendom AS | Real estate | 2014 |
| Leirfallsgata Eiendom Holding AS | | 2025 |
| Leirfossv 45 AS | Real estate | 2013 |
| Leiv Eiriksson Nyskaping AS | Professional & scientific | 2002 |
| Leksvik Engineering AS | Professional & scientific | 2001 |
| Lemab Holding AS | | 2026 |
| Lemaro Holding AS | | 2025 |
| Lemcke AS | Information & communication | 2020 |
| Leo & Co Renholdsservice AS | Administrative & support | 2005 |
| Leo Hjelde AS | | 2025 |
| Leo's AS | Hospitality | 2023 |
| Leodin Holding AS | | 2026 |
| Leopard Barbershop AS | Other services | 2025 |
| Leoton AS | | 2022 |
| Lep AS | | 2024 |
| Lerchendal Pub AS | Hospitality | 2024 |
| Lerflaten Gård AS | Real estate | 2022 |
| Lerkendal AS | Real estate | 2020 |
| Lerkendal Bil AS | Wholesale & retail | 2015 |
| Lerkendal Stadion AS | Arts & recreation | 2017 |
| Lernes Solutions AS | Real estate | 2025 |
| Lervåg Invest AS | | 2022 |
| Leseth Invest AS | Real estate | 2021 |
| Lester Solbakken Consulting AS | Information & communication | 2025 |
| Let Eiendom AS | Real estate | 2005 |
| Let's Dance AS | Education | 2011 |
| Lets Work AS | Real estate | 2019 |
| Leulf AS | Real estate | 2012 |
| Leuthenhaven AS | Real estate | 1982 |
| Leuthenhaven Florist Ans | Wholesale & retail | 1990 |
| Leuthens AS | Hospitality | 2026 |
| Lev Eiendom AS | Real estate | 2008 |
| Levang Invest Ltd Nuf | | 2019 |
| Levanger Brygge Utbygging AS | Real estate | 1970 |
| Levanger Lokalmat Og Opplevelser AS | Wholesale & retail | 2022 |
| Levangertorget Da | Real estate | 2009 |
| Levin Holding AS | Construction | 2021 |
| Lexhus AS | Real estate | 1993 |
| Leypha AS | Information & communication | 2025 |
| LF Newco 1 AS | | 2025 |
| LF Nord AS | Real estate | 2025 |
| LGC AS | Professional & scientific | 2026 |
| Lgevelt Holding AS | Professional & scientific | 2023 |
| LGM AS | | 2024 |
| LGR Technologies AS | Professional & scientific | 2024 |
| LHF AS | Wholesale & retail | 2022 |
| LHS AS | | 2024 |
| Lia Nordre Aktivitetsgård AS | Education | 2024 |
| Lian AS | Real estate | 2005 |
| Lian Invest AS | | 2021 |
| Lianlaget AS | Real estate | 2012 |
| Liantoppen Invest AS | Professional & scientific | 2018 |
| Libeda AS | Real estate | 1988 |
| Liberalitas KG Nuf | Real estate | 2023 |
| Libero AS | | 2021 |
| Licepliers AS | Professional & scientific | 2026 |
| Lie Gilberg Arkitekter AS | Professional & scientific | 1998 |
| Lien Byggservice AS | Construction | 2017 |
| Lifa Holding AS | | 2022 |
| Lift Og Vaktmesterservice Da | Construction | 2000 |
| Liftconsult AS | Construction | 2012 |
| Ligra Innovations AS | Agriculture & fishing | 2024 |
| Lihaugen AS | | 2026 |
| Liir AS | Wholesale & retail | 1994 |
| Lijm Invest AS | | 2023 |
| Lijo Renhold AS | Administrative & support | 2020 |
| Lijo Service AS | Professional & scientific | 1987 |
| Like Blid AS | Real estate | 2010 |
| Like Eiendom AS | | 2018 |
| Lildog AS | Information & communication | 2017 |
| Liljeklang AS | Arts & recreation | 2009 |
| Liljendal 2 AS | Real estate | 2020 |
| Liljendal 3 Bolig AS | Real estate | 2023 |
| Liljendal AS | Real estate | 2009 |
| Lille London AS | Hospitality | 1993 |
| Lille Martine AS | Wholesale & retail | 2018 |
| Lille Maur AS | Administrative & support | 2024 |
| Lille Skansen AS | Hospitality | 2010 |
| Lille Szechuan Byåsen AS | Hospitality | 2019 |
| Lilleberg Holding AS | Real estate | 2017 |
| Lillebergvegen 8 Eiendom AS | Real estate | 2021 |
| Lillebryggen AS | Professional & scientific | 1949 |
| Lilleby Eiendom AS | Real estate | 2008 |
| Lilleby Pub & Restaurant AS | Hospitality | 2025 |
| Lilleby Treningssenter AS | Arts & recreation | 2018 |
| Lillegården AS | | 2024 |
| Lillehammer Panorama IV AS | Real estate | 2015 |
| Lilleng Driv AS | Information & communication | 2022 |
| Lima Invest AS | | 2005 |
| Limar AS | | 2024 |
| Limi Invest AS | | 2023 |
| Limiting Factor AS | Information & communication | 2026 |
| Limo AS | Manufacturing | 2013 |
| Lin Olderøien AS | Professional & scientific | 2024 |
| Lina Kaasbøll AS | Wholesale & retail | 2025 |
| Lina Munkhaugen AS | | 2026 |
| Lincon Holding AS | Real estate | 2017 |
| Lincon Prosjektledelse AS | Professional & scientific | 2018 |
| Lindbak AS | Wholesale & retail | 1988 |