| Lentus Administrasjon AS | Professional & scientific | 2017 |
| Lentus Butikkdrift AS | Wholesale & retail | 2015 |
| Lentus Bygg AS | Construction | 2013 |
| Lentus Eiendom AS | Real estate | 2012 |
| Lentus Invest AS | Professional & scientific | 1935 |
| Lentus Leie Før Eie AS | Real estate | 1986 |
| Lentusgruppen AS | Wholesale & retail | 2011 |
| Leo Ajkic Ent AS | Information & communication | 2015 |
| Leo Bemanning AS | Administrative & support | 2024 |
| Leo Finans AS | Real estate | 2001 |
| Leo Holding AS | Construction | 2005 |
| Leo Revisjon Da | Professional & scientific | 2001 |
| Leoboe Design AS | Professional & scientific | 2017 |
| Leohsi AS | | 2022 |
| Leoj AS | Wholesale & retail | 2024 |
| Leon Arvin Holding AS | Construction | 2005 |
| Leon Og Liv Holding AS | Financial services | 2018 |
| Leon's Krambu AS | Financial services | 2015 |
| Leonardo Invest AS | | 2024 |
| Leonardo Tjenester AS | Administrative & support | 1998 |
| Leonel Dagligvare AS | Wholesale & retail | 2023 |
| Leonessa AS | Real estate | 2019 |
| LEONIDAS78 Limited | Real estate | 2020 |
| Leonimbus AS | Real estate | 2014 |
| Leonov Da | Arts & recreation | 2023 |
| Leonum Holding AS | | 2026 |
| Leonóre Collective AS | Wholesale & retail | 2024 |
| Leopard Invest AS | Real estate | 1999 |
| Leopold Holding AS | Financial services | 2015 |
| Leopold Invest AS | Real estate | 2005 |
| Leopoldus Eiendom AS | Real estate | 2020 |
| Leopoldus Holding AS | Real estate | 2019 |
| Leopoldus Sleep AS | Wholesale & retail | 2026 |
| Leopoldus X AS | | 2023 |
| Leopond Holding AS | Real estate | 2019 |
| Leos Lekeland Holding AS | Arts & recreation | 2008 |
| Leos Lekeland Norge AS | Arts & recreation | 2007 |
| Leoville AS | | 2006 |
| Lep Eiendom AS | | 2018 |
| Lepido AS | | 2022 |
| Lepidoptera AS | | 2024 |
| Lepidus AS | Wholesale & retail | 2024 |
| Lepovic Holding AS | Real estate | 2018 |
| Lepperod Fishworks AS | Professional & scientific | 2025 |
| Lepra Film Distribution Limited Nuf | Information & communication | 2012 |
| Leprechaun AS | | 2019 |
| Leprous Da | Arts & recreation | 2017 |
| Lepus Invest AS | Financial services | 2008 |
| Ler Invest AS | | 2018 |
| Lerche Anskaffelser AS | Professional & scientific | 2026 |
| Lerche Arkitekter AS | Professional & scientific | 1987 |
| Lerche Avatars AS | Arts & recreation | 2024 |
| Lerche Futura AS | Professional & scientific | 2005 |
| Lerdal Bygg AS | Construction | 2023 |
| Lerdal Invest AS | Real estate | 1977 |
| Lerdalstunet AS | Real estate | 2019 |
| Lere AS | Real estate | 2023 |
| Lerevax Holding AS | | 2024 |
| Lerici Invest AS | | 2025 |
| Lerka Eiendom AS | Real estate | 2013 |
| Lerka Utvikling AS | Real estate | 2019 |
| Lerka Østbyen AS | | 2026 |
| Lerkebo AS | | 2013 |
| Lerkelia Holding AS | Education | 2024 |
| Leroise-Holding AS | | 2024 |
| Leroli AS | Real estate | 1997 |
| Lerskallen Skisenter SA | Arts & recreation | 1979 |
| Lersol AS | Arts & recreation | 2024 |
| Lervig Brygge AS | Real estate | 2005 |
| Lervigsveien 32 Og Tinngata 8 AS | Real estate | 2014 |
| Lervigsveien Bolig AS | Real estate | 2016 |
| Lervik Holding AS | | 2021 |
| Lervik Holdings AS | | 2025 |
| Lervik Invest AS | | 2020 |
| Lerøy Norge AS | Wholesale & retail | 1969 |
| Lerøy Sjømatgruppen AS | Wholesale & retail | 2005 |
| Les Deux Norway Retail AS | Wholesale & retail | 2022 |
| Les Elfes De Couleurs AS | Wholesale & retail | 2026 |
| Les Mousquetaires AS | Education | 2015 |
| Lesero Idé Og Import AS | Wholesale & retail | 2013 |
| Leshit AS | Professional & scientific | 2006 |
| Lesja Invest AS | | 2019 |
| Lesjøfors AS | Wholesale & retail | 1994 |
| Leske AS | Wholesale & retail | 2023 |
| Lesley Cosmetics AS | Wholesale & retail | 1992 |
| Leslies AS | Wholesale & retail | 2006 |
| Lesmooth Design AS | Professional & scientific | 2015 |
| Lesovaren Consulting AS | | 2026 |
| Less Company AS | Information & communication | 2020 |
| Lestate AS | Real estate | 2021 |
| Lestate Holding AS | Real estate | 2021 |
| Lestha AS | | 2021 |
| Lestra Invest AS | | 2024 |
| Lestranger AS | | 2020 |
| Let Him Cook AS | | 2026 |
| Let's Consult AS | Information & communication | 2013 |
| Let's Deal AS | Professional & scientific | 2011 |
| Let's Drive Trafikkskole AS | Education | 2012 |
| Let's Talk AS | Health & social care | 2024 |
| Leteng AS | Wholesale & retail | 1989 |