| Langdalen Bygg AS | Våler I Solør | 2018 |
| Lange-Byggservice AS | Sandnes | 2025 |
| Langedalen Maskin AS | Viksdalen | 2022 |
| Langedalsvegen AS | Skare | 2007 |
| Langeland Multiservice AS | Sande I Sunnfjord | 2020 |
| Langelo Holding AS | Horten | 2005 |
| Langemyhr Holding AS | Tønsberg | 2005 |
| Langenbergs El & Industriservice AB | Moss | 2007 |
| Langenes Eiendom AS | Isdalstø | 1987 |
| Langerud Maskin AS | Kvelde | 2018 |
| Langesund Rør AS | Stathelle | 1983 |
| Langesæter Bygg AS | Hjelmås | 2018 |
| Langevika Og Søndre Melkevika Renseanlegg SA | Mandal | 2010 |
| Langevåg Transport AS | Bømlo | 2017 |
| Langfjell AS | Sørreisa | 2017 |
| Langfjorden Bygg AS | Vistdal | 2020 |
| Langhelle Service AS | Årland | 2017 |
| Langhus VVS AS | Langhus | 2023 |
| Langland AS | Ler | 2013 |
| Langli Bygg-Blikk & Vedlikehold AS | Skiptvet | 2002 |
| Langlo Maskin AS | Stranda | 2013 |
| Langmyr Bygg Og Anleggsservice AS | Kongsberg | 2022 |
| Langnau Flisenverlegung GmbH | De-24119 Kronshagen | 2013 |
| Langnes Bygg AS | Vanvikan | 2011 |
| Langnes Holding AS | Slåstad | 2005 |
| Langnes Maskinstasjon Da | Skodje | 1978 |
| Langnes Og Bakkan Blikkenslagerforretning AS | Verdal | 1987 |
| Langnes VVS Butikk AS | Tromsø | 2017 |
| Langryggveien AS | Myre | 2019 |
| Langset Energy Solutions AS | Molde | 2026 |
| Langset Interior Solutions AS | Molde | 2026 |
| Langset Rør AS | Averøy | 2026 |
| Langset Rør AS | Averøy | 1995 |
| Langset Rør Proff AS | Averøy | 2020 |
| Langseth Bygg AS | Ingeberg | 2015 |
| Langseth Logistikk & Service AS | Oslo | 2026 |
| Langsholt Bygg AS | Borgenhaugen | 2017 |
| Langsholt Glass Service AS | Borgenhaugen | 2019 |
| Langsholt Glass Service Da | Rakkestad | 2009 |
| Langsundforbindelsen AS | Hansnes | 1986 |
| Langvann Maskin & Utemiljø AS | Skonseng | 2012 |
| Langvas AS | Ålesund | 1998 |
| Langved Blikkenslagerverksted AS | Tjøme | 2019 |
| Langvik Maskin AS | Tau | 2016 |
| Langvik Rørleggerservice AS | Klavestadhaugen | 2019 |
| Langåkers Tjenester AS | Stol | 2024 |
| Langås & Lundeng Ans | Bodø | 2003 |
| Langås Bygg AS | Bodø | 2005 |
| Langørgen AS | Melhus | 2013 |
| Langøy Bygg AS | Kragerø Skjærgård | 2023 |
| Langøybrua AS | Kragerø Skjærgård | 1983 |
| Laning AS | Sarpsborg | 2005 |
| Laning Eiendom AS | Sarpsborg | 2007 |
| Lanna Snekkerservice AS | Ulefoss | 2012 |
| Lannvinn Holding AS | Bergen | 2024 |
| Lappebakken AS | Åmot | 2017 |
| Lappland Jakt & Byggtjänst AB | Se-960 33 Murjek | 2015 |
| Lapwall AB Nuf | Se-781 90 Borlânge | 2018 |
| Larix Landskap AS | Skoppum | 2021 |
| Laros Kamil Pirecki | Pl-31-271 Krakow | 2018 |
| Larry Roger AS | Vanse | 2021 |
| Lars a. Lien Invest AS | Furnes | 2022 |
| Lars E. Strand Malermester Og Entreprenørforretning AS | Skjetten | 2019 |
| Lars Elnes Rørleggerforretning AS | Hof | 2008 |
| Lars Erik Jåvold AS | Grimstad | 2012 |
| Lars Erik Lunde AS | Hafslundsøy | 2025 |
| Lars Eriksson | Oslo | 2002 |
| Lars Gravermoen AS | Kolbotn | 1992 |
| Lars Gulbjørnrud Fjellsprengning AS | Fagerstrand | 2012 |
| Lars Haga AS | Nedre Eggedal | 2024 |
| Lars Haga Holding AS | Nedre Eggedal | 2024 |
| Lars Helland AS | Voss | 2014 |
| Lars Høyem AS | Heimdal | 2020 |
| Lars Ivar Udjus AS | Grimstad | 2012 |
| Lars Josefsson Montage AB | Se-655 94 Karlstad | 2009 |
| Lars Jønsson AS | Godvik | 2007 |
| Lars Jønsson Gruppen AS | Godvik | 1990 |
| Lars K Bygg AS | Skien | 2021 |
| Lars K Holding AS | Skien | 2021 |
| Lars Lind | Se-380 53 Fliseryd | 2018 |
| Lars Malmbergs Elektriska AB Nuf | Se-514 60 Dalstorp | 2025 |
| Lars Martin Grøv AS | Hedalen | 2024 |
| Lars Myhren AS | Ringebu | 2012 |
| Lars Nannestad Holding AS | Brumunddal | 2023 |
| Lars Normann AS | Dilling | 2020 |
| Lars Olav Harsjøen Entreprenør AS | Tynset | 2019 |
| Lars P. Dahle Maskin AS | Klepp Stasjon | 2007 |
| Lars Steinar Sundby AS | Algarheim | 2014 |
| Lars Storhaug AS | Dombås | 1994 |
| Lars Sæterøy & Sønn AS | Frei | 1980 |
| Lars Thorbjørnsen Graving Og Transport AS | Nedenes | 2013 |
| Lars Tore Johannessen AS | Snåsa | 2014 |
| Lars Tore Olsen AS | Alta | 2015 |
| Lars Uvaag AS | Slitu | 2022 |
| Lars Uvaag AS | Slitu | 2026 |
| Larsen & Aas Gulvbehandling Ans | Fjerdingby | 2003 |
| Larsen & Moore Holding AS | Oslo | 2019 |
| Larsen Anleggsservice AS | Son | 1992 |
| Larsen Bad Og Flis AS | Kristiansund N | 2016 |
| Larsen Blikkenslagerverksted AS | Harstad | 2008 |