| Larsen Bygg & Tømrerfirma AS | Hyggen | 2018 |
| Larsen Bygg & Vedlikehold AS | Vanse | 2024 |
| Larsen Bygg AS | Holmestrand | 2013 |
| Larsen Bygg Og Anlegg AS | Harstad | 2018 |
| Larsen Bygg Og Betong AS | Tolvsrød | 2025 |
| Larsen Capital Holding AS | Neiden | 2015 |
| Larsen Eiendom AS | Oslo | 1988 |
| Larsen Entreprenør AS | Hasselvika | 1997 |
| Larsen Entreprenør Og Anlegg AS | Mjåvatn | 2023 |
| Larsen Finans AS | Hunndalen | 2003 |
| Larsen Gbe AS | Son | 2002 |
| Larsen Glassmontering Ltd Nuf | Kråkerøy | 2008 |
| Larsen Grus Og Transport AS | Rena | 2011 |
| Larsen Kolstad Bygg AS | Rakkestad | 2019 |
| Larsen Maskin & Transport AS | Rypefjord | 1998 |
| Larsen Maskin AS | Stavern | 2015 |
| Larsen Maskin Og Transport AS | Melhus | 2019 |
| Larsen Maskindrift AS | Finnås | 1980 |
| Larsen Maskinentreprenør AS | Valestrandsfossen | 2024 |
| Larsen Montasje Og Invest AS | Namsos | 2023 |
| Larsen Multiservice AS | Kvalsund | 2021 |
| Larsen Mur Og Flis AS | Nordre Frogn | 2023 |
| Larsen Og Syversen Vedlikehld Da | Sofiemyr | 1990 |
| Larsen Rør Og Sanitær AS | Nyborg | 2019 |
| Larsen Rørleggerbedrift AS | Dal | 2020 |
| Larsen Utvikling AS | Son | 2011 |
| Larsen's Montasje AS | Rypefjord | 2019 |
| Larsens Byggservice AS | Tolvsrød | 2000 |
| Larsens Elektro AS | Alta | 1980 |
| Larsens Kjøleservice AS | Hunndalen | 1989 |
| Larsens Skovservice | Son | 2001 |
| Larsens Vann & Varme AS | Sandefjord | 1995 |
| Larsenvarmepumpe AS | Vanse | 2024 |
| Larson Maskin AS | Namnå | 2019 |
| Larssen Maskin AS | Fauske | 2004 |
| Larsson Bygg Og Maskin AS | Flesberg | 2014 |
| Larsson Entreprenør AS | Oslo | 2025 |
| Larvik Bygg AS | Larvik | 2017 |
| Larvik Bygg Entreprenør AS | Larvik | 2021 |
| Larvik Kobber Og Blikk AS | Larvik | 1993 |
| Larvik Maskin Da | Larvik | 1997 |
| Larvik Montasje AS | Larvik | 2023 |
| Larvik Rørhandel AS | Larvik | 1933 |
| Larvik Rørmontasje AS | Larvik | 2010 |
| Larvik Rørservice AS | Larvik | 2023 |
| Larvik Saneringsselskap AS | Larvik | 1969 |
| Larvik Ventilasjon AS | Larvik | 2012 |
| Larvik VVS AS | Larvik | 2021 |
| Lary Bygg AS | Valderøya | 2015 |
| Lasbedrijf Gyunay | 2541Pp 'S-Gravenhage | 2024 |
| Laserbygg- AS | Mo I Rana | 2023 |
| Laserpunkt AS | Askim | 2024 |
| Laskemoen Eiendom AS | Gvarv | 2012 |
| Lasse Axelsson Holding AS | Skien | 2005 |
| Lasse Bredesen Entreprenør AS | Røkland | 2000 |
| Lasse Eide Holding AS | Sand | 2005 |
| Lasse Fæste AS | Drøbak | 2021 |
| Lasse Holst AS | Gressvik | 1989 |
| Lasse Løftamo AS | Kvål | 2011 |
| Lasse Randen Kran Og Betong AS | Leikanger | 2021 |
| Lasse Sagdal Bygg AS | Kløfta | 2021 |
| Lasse Solberg Invest AS | Sandefjord | 2005 |
| Lassen a M AS | Svelvik | 1983 |
| Lassesen Bygg AS | Kongshavn | 2013 |
| Last & Planering Rail LPR AB | 75323 Uppsala | 2011 |
| Last Og Brast AS | Molde | 1984 |
| Last Touch Service AS | Oslo | 2023 |
| Lasting & Transport Eiendom AS | Alta | 2007 |
| Laszlo Kolozsvari | 1181 Budapest | 2007 |
| Late Bygg AS | Oslo | 2013 |
| Latno Group AS | Ålesund | 2026 |
| Latno Nuf | Lv5001 Ogre | 2019 |
| Latnor AS | Oslo | 2020 |
| Latvian Wood Houses Sia | Lv-2150 Siguldas | 2019 |
| Lauareid Holding AS | Skånevik | 2020 |
| Lauareid Service AS | Skånevik | 2020 |
| Laubakken AS | Lyngdal | 2022 |
| Lauen Bygg AS | Tingvatn | 2026 |
| Lauer GmbH | Oslo | 2009 |
| Laugstol AS | Porsgrunn | 1992 |
| Laugstol Energiservice AS | Froland | 2021 |
| Laukas Elektriske AS | Lillestrøm | 1997 |
| Laukas Elektriske Prosjekt AS | Lillestrøm | 2024 |
| Laukas Invest AS | Lillestrøm | 2023 |
| Laukas Prosjekt AS | Lillestrøm | 2021 |
| Laukas VVS AS | Lillestrøm | 2025 |
| Launes Entreprenør AS | Hovden I Setesdal | 1989 |
| Laupsa AS | Asker | 2019 |
| Laupsa Holding AS | Lillesand | 2022 |
| Laupstad Bygg AS | Hamar | 2024 |
| Laupstad Holding AS | Hamar | 2024 |
| Lauransen Holding AS | Fauske | 2012 |
| Lauring Vedlikehold AS | Oslo | 2001 |
| Laurits&Sønn Byggservice AS | Oslo | 2026 |
| Lauritsen AS | Oppegård | 2015 |
| Lauritsen Maling & Gulvsliping AS | Stathelle | 2024 |
| Lauritsen Maling Og Gulvsliping Ans | Stathelle | 2019 |
| Lauritsen VVS AS | Oppegård | 2018 |
| Lauritz Fladby AS | Nannestad | 2004 |
| Lauritzen & Lauritzen AS | Tromsø | 2016 |