| Ladestolpen AS | Arnatveit | 2023 |
| Ladesystem AS | Fornebu | 2021 |
| Lady Solskjerming AS | Lillestrøm | 1976 |
| Laempe Mössner Sinto GmbH | De-39179 Barleben Ot Meizendorf | 2020 |
| Laerdal Medical AS | Stavanger | 1997 |
| Lafinto AS | Gamle Fredrikstad | 2002 |
| Lafinto Drammen AS | Oslo | 2023 |
| Lafopa AS | Verdal | 2023 |
| Lafopa Industrier AS | Verdal | 1987 |
| Lafteboys AS | Sandefjord | 2023 |
| Laftehus Oü | Ee-10134 Tallinn | 2009 |
| Laftehøvleriet AS | Øvre Surnadal | 2004 |
| Laftekledning AS | Verdal | 2005 |
| Laguna Produkter AS | Holmestrand | 1997 |
| Laidback Licence to Chill AS | Hamar | 2009 |
| Lakeuden Hydro OY Nuf | 60120 Seinäjoki | 2023 |
| Lakkering Og Vedlikeholdservice AS | Moelv | 2015 |
| Lakselv Bakeri AS | Lakselv | 1993 |
| Lamella AS | Ålesund | 2018 |
| Lamelltre Holding AS | Lena | 1992 |
| Laminathuset Combi Craft AS | Svarstad | 1970 |
| Lampas | Dk-6000 Kolding | 2021 |
| Lanabukt Eiendom AS | Jarfjord | 2020 |
| Lancelot AS | Fornebu | 1990 |
| Land Sag Og Høvleri AS | Odnes | 2013 |
| Land Trykkeri AS | Dokka | 2009 |
| Landbruk & Maskinservice AS | Tjodalyng | 2024 |
| Landbruk Og Industriservice AS | Egersund | 2024 |
| Landbruk Og Transportservice AS | Storsteinnes | 2008 |
| Lande Mek Eiendom AS | Borgenhaugen | 1982 |
| Lande Mek Verksted AS | Borgenhaugen | 2001 |
| Landheim AS | Skreia | 1992 |
| Landro Mekaniske AS | Rong | 2016 |
| Landsbybakaren AS | Sæbøvik | 2016 |
| Landsbybryggeriet AS | Randaberg | 2008 |
| Landsjø AS | Mosterøy | 2024 |
| Landsnes Utleie, Rep & Vedlikehold AS | Hidrasund | 2022 |
| Landsnes Villsauprodukter AS | Jelsa | 2017 |
| Landsverk Storformat AS | Siggerud | 2016 |
| Landsverk Vassengen AS | Nannestad | 2020 |
| Landsystem AS | Torød | 2016 |
| Landøy Stein Ans | Værlandet | 1995 |
| Lanetech Limited Nuf | Yo21 1 Ql York | 2024 |
| Langbach AS | Malmefjorden | 2026 |
| Langeland Lab Service AS | Frogner | 2018 |
| Langeland Modell AS | Jørpeland | 1995 |
| Langeland Sag Og Service AS | Lonevåg | 2026 |
| Langeland-Multiservice AS | Kalandseidet | 2024 |
| Langerud Sag Og Høvel Da | Bagn | 2004 |
| Langestrand AS | Oslo | 2005 |
| Langesund Miniatyrskipsbyggeri AS | Langesund | 2004 |
| Langesund Ostemakeri AS | Langesund | 2016 |
| Langesund Sjømat AS | Langesund | 1985 |
| Langesundfisk AS | Langesund | 2014 |
| Langeteig Industries AS | Balestrand | 2021 |
| Langlo Interiør AS | Stranda | 2025 |
| Langmyr Slakt AS | Skage I Namdalen | 2022 |
| Langset Bugge Gjertsen AS | Molde | 2020 |
| Langset Mek AS | Sunndalsøra | 2000 |
| Langøra Kaffe AS | Stjørdal | 2023 |
| Langørgen Vasslag SA | Bosberg | 1950 |
| Lanifilm AS | Voss | 2019 |
| Lanne Elektriske Verksted AS | Stavanger | 1978 |
| Lanne Investering AS | Hafrsfjord | 2014 |
| Lanne Trafo AS | Hafrsfjord | 2014 |
| Lano N.V. | Be-8530 Harelbeke | 2019 |
| Lanopro Production AS | Borre | 2009 |
| Lantmannen Cerealia AS | Oslo | 1912 |
| Lantmännen Cerealia AB | Se-104 25 Stockholm | 2014 |
| Lantmännen Unibake Norway AS | Langhus | 2005 |
| Lanzatech Exelixis SPV AS | Oslo | 2023 |
| Laponicum AS | Berlevåg | 2025 |
| Lappefrua AS | Vikhammer | 2023 |
| Lappeland.No AS | Oslo | 2020 |
| Larkin Holding AS | Sandefjord | 2005 |
| Larkins AS | Fagerstrand | 2000 |
| Larko International Aps | Dk-2740 Skovlunde | 2015 |
| Larkollen Gin Compagnie AS | Larkollen | 2020 |
| Lars Aas Snekkerverksted AS | Ski | 2019 |
| Lars Arntzen Holding AS | Charlottenlund | 2022 |
| Lars Berg Trading AS | Spongdal | 1994 |
| Lars Berland Holding AS | Sandnes | 2007 |
| Lars E Holding AS | Heimdal | 2021 |
| Lars E. Paulgaard Elektroservice AS | Vettre | 2004 |
| Lars Egil Lande Mek Og Sveis AS | Vesterøy | 2015 |
| Lars Ekman Svets & Underhåll AB | 54124 Skövde | 2011 |
| Lars P Riksheim Treindustri AS | Straumgjerde | 1977 |
| Lars Peter Jensen Trading AS | Florø | 2007 |
| Larsen Bakeri AS | Skånevik | 2013 |
| Larsen Hvitevareservice AS | Våler I Østfold | 2018 |
| Larsens Bakeri AS | Borhaug | 2015 |
| Larsens Motorservice AS | Herøy | 2013 |
| Larsstø Båt & Maskinservice AS | Sæbøvik | 2005 |
| Larvik Båtverksted AS | Larvik | 2019 |
| Larvik Cell AS | Larvik | 2002 |
| Larvik Impregneringskompani AS | Larvik | 1992 |
| Larvik Løk AS | Stavern | 2001 |
| Larvik Mikrobryggeri AS | Larvik | 2011 |
| Larvik Reklame AS | Larvik | 1986 |
| Larvik Trykkluft AS | Larvik | 2024 |