| Friluftscamp AS | Arts & recreation | 2012 |
| Front Lier AS | Wholesale & retail | 2024 |
| Gamle Ringeriksvei AS | Real estate | 2020 |
| Garasjeportmannen AS | Construction | 2013 |
| GDV139 AS | Real estate | 2023 |
| Geir Gulliksen Invest AS | Arts & recreation | 2005 |
| Genova Restaurantdrift Da | Hospitality | 2004 |
| Gillco AS | Real estate | 2020 |
| Gjellebekk Eiendom AS | Real estate | 1969 |
| Gjellebekkstubben 9-11 AS | Real estate | 2012 |
| Glitre Consulting AS | Information & communication | 2019 |
| Global Enviro AS | Manufacturing | 2018 |
| Glødi AS | Information & communication | 2026 |
| Glødi Medical AS | Health & social care | 2026 |
| Godtbo Eiendom AS | Real estate | 2021 |
| Godtbo Holding AS | Real estate | 2021 |
| Grogro AS | Manufacturing | 2018 |
| GS Bulktransport AS | Transport & logistics | 1988 |
| Hammerslaget AS | Wholesale & retail | 2015 |
| Hammerslaget Holding AS | Wholesale & retail | 2021 |
| Handy AS | Construction | 2024 |
| Hayat Holding AS | | 2020 |
| Heen JR AS | Administrative & support | 2020 |
| Heia Fus Barnehage AS | Education | 2019 |
| Heiaklinikken AS | Health & social care | 2007 |
| Helle Installasjon AS | Construction | 2014 |
| Håkon Utengen AS | | 2025 |
| Idrettskonsulent:N AS | Wholesale & retail | 2013 |
| Ingar Heien AS | Construction | 2012 |
| Institutt for Prosesspsykologi Da | Health & social care | 2014 |
| Interbauhaus Leasing AG | Administrative & support | 2008 |
| Intertermo AS | Transport & logistics | 2000 |
| Ipanema AS | Hospitality | 2022 |
| Ipanema Holdco AS | Hospitality | 2022 |
| Italiensk Bakeri AS | Manufacturing | 2014 |
| J. Domagala Holding AS | | 2021 |
| Jarsann AS | | 2026 |
| JHG Stables AS | Agriculture & fishing | 2022 |
| Juliussen Maskin AS | Manufacturing | 2023 |
| Jørn Storberget AS | Construction | 2012 |
| K7 Invest AS | Real estate | 2017 |
| Karl H Strøm AS | Wholesale & retail | 2004 |
| Kims Montasje AS | Construction | 2018 |
| Kino Liertoppen AS | Wholesale & retail | 2005 |
| Kirmed AS | Wholesale & retail | 2015 |
| Kjennergrinda 2 AS | Real estate | 2018 |
| Kjølegutta AS | Construction | 2017 |
| Kleiver Eiendoms- Og Formuesforvaltningsselskap AS | Real estate | 2007 |
| Klinikk Amara AS | Other services | 2026 |
| Knoph Labs AS | Information & communication | 2026 |
| Kof Eiendom AS | Real estate | 2003 |
| Kollevold AS | Wholesale & retail | 2000 |
| Kollevold Holding AS | Wholesale & retail | 2005 |
| Konkursnett AS | Wholesale & retail | 2016 |
| Kringstad Holding AS | Financial services | 2017 |
| Kristanix AS | Information & communication | 2010 |
| Kristanix Mellomholding AS | Information & communication | 2023 |
| Kvist Interiør AS | Wholesale & retail | 2010 |
| La Sande Holding AS | | 2023 |
| La Trattoria AS | Hospitality | 2021 |
| Lamima AS | Real estate | 2020 |
| Lampett AS | Arts & recreation | 2016 |
| Le Capital AS | | 2026 |
| Lek Og Landskap AS | Administrative & support | 2014 |
| Lerstein Holding AS | | 2021 |
| Lier Auto AS | Other services | 2009 |
| Lier Dekk Og Felg AS | Wholesale & retail | 1987 |
| Lier Hud Og Laserklinikk AS | Other services | 2024 |
| Lier Lastebilservice AS | Other services | 2007 |
| Lierskogen Anlegg AS | Construction | 1997 |
| Lierskogen Auto Senter AS | Wholesale & retail | 1995 |
| Lierskogen Bil AS | Other services | 2004 |
| Liertoppen Bilpleie AS | Other services | 2015 |
| Liertoppen Eiendom AS | Real estate | 2005 |
| Liertoppen Leker AS | Wholesale & retail | 2019 |
| Liertoppen Rens Ans | Other services | 2001 |
| Liertoppen Skomaker AS | Other services | 2023 |
| Liertoppen Tannlegesenter AS | Health & social care | 2013 |
| Liervet AS | Professional & scientific | 2010 |
| Lilama Holding AS | | 2025 |
| Linskov Holding AS | Construction | 2005 |
| Lium AS | Wholesale & retail | 2019 |
| Lium Eiendom AS | Real estate | 2020 |
| Lo Monaco Company AS | Real estate | 2003 |
| Lorentzen & Pladsen AS | Wholesale & retail | 1940 |
| Lumitree AS | Information & communication | 2019 |
| Løvåsdal Entreprenør AS | Construction | 2008 |
| Makela AS | Information & communication | 2019 |
| Marcus Racing AS | Arts & recreation | 2018 |
| Margita AS | Hospitality | 2014 |
| Mester Blomst AS | Wholesale & retail | 1996 |
| Mester Grønn AS | Wholesale & retail | 1983 |
| Metallhuset Bergsøe AS | Wholesale & retail | 2004 |
| Mimea AS | Wholesale & retail | 2014 |
| ML 220 Holding AS | | 2023 |
| Modulcompagniet AS | Wholesale & retail | 2007 |
| Mu-Holding AS | | 2025 |
| Murmester Stryken Og Gudbrandsen AS | Construction | 2008 |
| N&F Eiendom AS | Real estate | 2017 |
| N&F Holding AS | Real estate | 2016 |