| Lysholm Eiendom AS | Real estate | 2023 |
| Lyshuset Holding AS | Real estate | 2021 |
| Lysio Research AB Nuf | Professional & scientific | 2021 |
| Lyskamm Invest AS | Real estate | 2017 |
| Lyskontroll AS | Professional & scientific | 2024 |
| Lysløypa AS | Information & communication | 2022 |
| Lysmester`N AS | Construction | 2003 |
| Lysne Helse AS | Health & social care | 2016 |
| Lysning Da | Arts & recreation | 2021 |
| Lyspunktet AS | Construction | 1995 |
| Lyspunktet Datter AS | | 2024 |
| Lysrud Brumunddal AS | Real estate | 2011 |
| Lyssand Forvaltning AS | | 2022 |
| Lyssen AS | Financial services | 2007 |
| Lyst Elektro AS | Construction | 2015 |
| Lystad Kittilsen AS | | 2022 |
| Lystadsvingen Utvikling AS | Real estate | 2018 |
| Lysteam AS | Professional & scientific | 2018 |
| Lysteknikk Elektroentreprenør AS | Construction | 2010 |
| Lysten Investment AS | Financial services | 2017 |
| Lystgården AS | Real estate | 2008 |
| Lysthuset AS | Wholesale & retail | 2020 |
| Lysverk Foto Da | Professional & scientific | 2026 |
| Lysverket Analyse AS | Administrative & support | 2021 |
| Lyså Holding AS | Real estate | 2007 |
| Lysås Eiendom AS | Real estate | 2016 |
| Lytic AS | | 2019 |
| Lytix Biopharma ASA | Professional & scientific | 2003 |
| Lytte AS | Information & communication | 2020 |
| Lyvia No AS | Information & communication | 2023 |
| Lyvjaberg AS | Health & social care | 2020 |
| Lyxalig AS | | 2021 |
| Lyxdekk AS | Wholesale & retail | 2012 |
| Lindab A/S | Wholesale & retail | 1980 |
| Lychegården A/S | Real estate | 1985 |
| Läckeby Products AB Nuf | Construction | 2015 |
| Länna AS | Wholesale & retail | 1934 |
| Lågen Bilglass AS | Wholesale & retail | 2017 |
| Lånekontoret AS | Financial services | 2020 |
| Lås & Adgang AS | Construction | 2025 |
| Lås & Dørteknikk AS | Wholesale & retail | 2011 |
| Låsgrossisten AS | Wholesale & retail | 2014 |
| Låshuset Holding AS | Professional & scientific | 2015 |
| Låshuset Sikkerhetssenter AS | Manufacturing | 2015 |
| Låskompaniet AS | Construction | 2025 |
| Låsmesteren AS | Construction | 2026 |
| Låspartner AS | Wholesale & retail | 2001 |
| Låve Kommunikasjon AS | Professional & scientific | 2012 |
| Låven Drift AS | Education | 1995 |
| Låvesvalen Familiebarnehage AS | Education | 2022 |
| Låveveien 42 AS | Real estate | 2024 |
| Låveveien 70 Holding AS | Real estate | 2021 |
| Låveveien 70 Næring AS | Real estate | 2021 |
| Låveveien AS | Real estate | 2024 |
| Læik AS | Information & communication | 2020 |
| Lær AS | Education | 2015 |
| Lær Smart AS | Information & communication | 2024 |
| Lærargarden AS | | 2019 |
| Lære AS | Wholesale & retail | 2006 |
| Lærebokforlaget Da | Information & communication | 2023 |
| Lærelyst AS | Wholesale & retail | 2023 |
| Lærer'N Bil & MC Trafikkskole AS | Education | 2013 |
| Læret Holding AS | | 2026 |
| Læringsrom AS | Education | 2019 |
| Lærum Capital Holding AS | | 2024 |
| Lærum Styrebistand AS | Professional & scientific | 2020 |
| Lættis Bursdag AS | Professional & scientific | 2019 |
| LÈ Properties AS | Real estate | 2018 |
| LÉ Trend AS | Wholesale & retail | 2018 |
| LÍF Begravelse AS | Other services | 2023 |
| Lóndia Clothing and Fashion AS | Wholesale & retail | 2025 |
| Löfgreen AS | Real estate | 2014 |
| Lönnemo Special Design AS | Real estate | 2011 |
| Lövenörn Holding AS | Professional & scientific | 2014 |
| Løberg Adventures AS | | 2021 |
| Løbos AS | Real estate | 2012 |
| Lødingen Butikkeiendom AS | Real estate | 2016 |
| Lødøen Bygg AS | Real estate | 2023 |
| Lødøen Pharma AS | Professional & scientific | 2023 |
| Løenveien 3 AS | Real estate | 1954 |
| Løes Invest AS | | 2026 |
| Løfle Køfle Da | Arts & recreation | 2008 |
| Løfsgaard Holding AS | | 2025 |
| Løfsgaard Urologi AS | Health & social care | 2025 |
| Løft Coaching Da | Other services | 2024 |
| Løft Media AS | Professional & scientific | 2025 |
| Løft Relocation AS | Transport & logistics | 2020 |
| Løftholding AS | Professional & scientific | 2025 |
| Løge Invest AS | Real estate | 2005 |
| Løgstrup - Steel | Construction | 2008 |
| Løhfway AS | | 2022 |
| Løj AS | Hospitality | 2017 |
| Løkeland AS | Professional & scientific | 2005 |
| Løken Boligutvikling AS | Real estate | 2024 |
| Løkenskogen Bolig AS | Real estate | 2021 |
| Løkenskogen Utvikling AS | Real estate | 2015 |
| Løkenveien Næring AS | Real estate | 2020 |
| Løkenåsentunet AS | Real estate | 2019 |
| Løkenåsveien 5 Holding AS | Real estate | 2022 |
| Løkenåsveien 5 Utvikling AS | Real estate | 2021 |