| Leine Invest AS | | 2023 |
| Leine Maritime AS | Manufacturing | 2014 |
| Leirvågen AS | Real estate | 2018 |
| Lek Deg Frisk AS | Professional & scientific | 2020 |
| Lemoni AS | Real estate | 1968 |
| Lencon AS | Professional & scientific | 2022 |
| Lensvik Eiendom AS | Real estate | 2019 |
| Lero AS | Real estate | 2002 |
| Lerstad Bygg AS | Construction | 2015 |
| Lerstadnakken Garasjelag SA | Real estate | 2016 |
| Lerstadveien 517 AS | Real estate | 2013 |
| Lerstadveien 519 AS | Real estate | 2006 |
| Lerstadveien 546 AS | Real estate | 2024 |
| Lerøy Havfisk AS | Agriculture & fishing | 2003 |
| Lesten Kystfiske AS | Agriculture & fishing | 2024 |
| Lesu AS | Real estate | 2000 |
| Letrade AS | Wholesale & retail | 1992 |
| Letsip Norway AS | Wholesale & retail | 2020 |
| Let`S Eat Da | Hospitality | 1996 |
| Leven Invest AS | | 2025 |
| Levika Invest AS | | 2026 |
| Leyan AS | Other services | 2022 |
| LI2 Invest AS | Wholesale & retail | 2021 |
| Liaaen Eiendom AS | Real estate | 1967 |
| Libra Investment AS | Transport & logistics | 2006 |
| Lidarende AS | Real estate | 2001 |
| Lido Finans AS | | 2025 |
| Lieds Eiendom AS | Manufacturing | 1977 |
| Lieds Verktøy AS | Manufacturing | 1989 |
| Lif Consult AS | Professional & scientific | 1998 |
| Life Capitol AS | Professional & scientific | 2000 |
| Life Vision AS | Wholesale & retail | 2017 |
| Lift Eiendom AS | Real estate | 2008 |
| Lift Tech AS | Construction | 1992 |
| Liftmann AS | Administrative & support | 2013 |
| Lighthouse AS | Professional & scientific | 2013 |
| Lille Aalesund AS | Hospitality | 1999 |
| Lille Kalvøy Fjordhytter AS | Hospitality | 2021 |
| Lillebøen AS | Real estate | 2021 |
| Lilleholen AS | Real estate | 2020 |
| Lilleholen Holding AS | Wholesale & retail | 2020 |
| Lillejohn AS | | 2025 |
| Lilleluxus AS | Wholesale & retail | 2026 |
| Lillerovde Maskin AS | Construction | 2007 |
| Lillevold Holding AS | | 2017 |
| Lilly's Studio AS | Professional & scientific | 2009 |
| Lilywhites Invest AS | | 2026 |
| Lindas Velvære Salong AS | Other services | 2011 |
| Lindgrens Invest AS | | 2024 |
| Linsti Holding AS | Administrative & support | 2021 |
| Lisi Drift AS | Transport & logistics | 2026 |
| Lisi Invest AS | | 2025 |
| Lisilease AS | Information & communication | 2024 |
| Lisimo AS | Real estate | 2007 |
| Litnor Bygg AS | Construction | 2019 |
| Liv Guri S Eriksen Ans | Wholesale & retail | 2002 |
| Live Holding AS | Other services | 2012 |
| Livsfokus AS | Agriculture & fishing | 1982 |
| Livsnyter AS | Arts & recreation | 2024 |
| LJK Invest AS | | 2023 |
| LKF Design AS | Professional & scientific | 2022 |
| LL Ystenesgaten 28 AS | Households | 1939 |
| Lodecode AS | Information & communication | 2012 |
| Logtech Invest AS | Financial services | 2015 |
| Lohne Holding AS | | 2024 |
| Lokal Digital AS | Professional & scientific | 2023 |
| Lokaladvokaten Ålesund AS | Professional & scientific | 2013 |
| Lola Invest AS | Financial services | 2018 |
| Lommelun Invest AS | Financial services | 2016 |
| Long Cheng Restaurant AS | Hospitality | 2010 |
| Longva Engineering AS | Professional & scientific | 2022 |
| Longva Kvernhusvegen 2 AS | Real estate | 2021 |
| Longvagruppen AS | Real estate | 2014 |
| Longvagruppen Holding AS | Real estate | 2014 |
| Longvas Oppmåling AS | Professional & scientific | 1997 |
| Lootlagoon AS | Wholesale & retail | 2025 |
| Lopas AS | Wholesale & retail | 2022 |
| Losen Eier AS | Real estate | 2025 |
| Losen Invest AS | | 2024 |
| Losen Studio AS | Professional & scientific | 2020 |
| Losholmen AS | Construction | 2015 |
| Losse Fish AS | Transport & logistics | 2020 |
| Lotus Capital AS | Wholesale & retail | 2018 |
| Lotus Energi AS | Wholesale & retail | 2020 |
| Lotus Fjordvegen AS | Wholesale & retail | 2026 |
| Lotus Vekst AS | | 2010 |
| Lovund AS | | 2007 |
| LRB AS | Other services | 2015 |
| Ltob Leasing AS | Administrative & support | 2018 |
| Luckly Games AS | Wholesale & retail | 2025 |
| Lucra Regnskap AS | Professional & scientific | 2024 |
| Ludde Og Laffen Holding AS | | 2023 |
| Ludens Norge AS | Education | 2006 |
| Luftfilter AS | Construction | 2025 |
| Luminell Invest AS | | 2018 |
| Luminell Team AS | Financial services | 2019 |
| Lumus AS | Professional & scientific | 2017 |
| Lundanes Bil AS | Other services | 2002 |
| Lundanes Eiendom AS | Real estate | 1992 |
| Lunevik Holding AS | | 2026 |