| Eiker Bygg Og Mur AS | Construction | 2021 |
| Eiker Byggebransje AS | Construction | 2024 |
| Eiker Gassmontasje AS | Construction | 2019 |
| Eiker Legekontor AS | Health & social care | 2014 |
| Eivind Eide AS | Construction | 2012 |
| Ekspressmonter AS | Construction | 2023 |
| Elconnect AS | Construction | 2024 |
| Elisas Laser Og Velvære AS | Other services | 2013 |
| Elyntiq AS | Information & communication | 2025 |
| Em Holding & Invest AS | Professional & scientific | 2021 |
| Em Subsea Hydraulics AS | Professional & scientific | 2021 |
| Ema Consult AS | Professional & scientific | 2024 |
| Encono AS | Professional & scientific | 2013 |
| Equipment Trade International AS | Wholesale & retail | 1996 |
| Erik Grøstad Invest AS | | 2020 |
| Erik Schenk VVS AS | Construction | 2019 |
| Esof Eiendom AS | Real estate | 2023 |
| Extra Leker Krokstad AS | Wholesale & retail | 2004 |
| Fam Waal Invest AS | | 2023 |
| Familie-Is AS | Wholesale & retail | 2018 |
| Fargeglad AS | Professional & scientific | 2012 |
| Feilsøk Avløp AS | Construction | 2000 |
| Ferharis Hud & Negl AS | Health & social care | 2025 |
| Ferra Scouting Og Analyse AS | Professional & scientific | 2026 |
| Fh-Haja AS | Wholesale & retail | 2016 |
| Filmoppdrag AS | Information & communication | 2014 |
| Fine Transport AS | Transport & logistics | 2022 |
| Fiskumparken C1-1 AS | Real estate | 2024 |
| Flat Sol AS | Transport & logistics | 2019 |
| Fluxion Holding AS | | 2026 |
| Formheim AS | Wholesale & retail | 2026 |
| Fredtun Eiendom AS | Real estate | 2026 |
| Fremar Holding AS | Real estate | 2023 |
| Funksjonelle Føtter AS | Health & social care | 2026 |
| Galaxy Krokstadelva AS | Hospitality | 2019 |
| Gamle Riksvei AS | Real estate | 2022 |
| Get Backline AS | Administrative & support | 2023 |
| Gezen Holding AS | Real estate | 2018 |
| Gezen Wealth Management AS | | 2025 |
| Gjerdesmett Holding AS | Wholesale & retail | 2016 |
| Glas Weld System Norge AS | Other services | 1990 |
| Glass Senteret Eiker AS | Construction | 2002 |
| God Pris AS | Wholesale & retail | 2026 |
| Greengrid AS | Professional & scientific | 2021 |
| Greenlife Ans | Wholesale & retail | 1996 |
| Grinhofs Bygg Service AS | Construction | 2024 |
| Grusoppretteren AS | Construction | 2016 |
| GRV Eiendom AS | Real estate | 2016 |
| GT Hytteservice AS | Administrative & support | 2023 |
| Gustavsen Graving Da | Construction | 2006 |
| Gylden Eng AS | Real estate | 2021 |
| GZN Auto AS | Wholesale & retail | 2024 |
| H&S Bil AS | | 2026 |
| H.S Invest AS | Construction | 2020 |
| Hans Mote AS | Wholesale & retail | 2005 |
| Harald Lysaker AS | Transport & logistics | 2000 |
| Haraldsson Leker BS AS | Wholesale & retail | 2015 |
| Helios Ventilasjon AS | Wholesale & retail | 2024 |
| Henriksen Graveservice AS | Construction | 2016 |
| Herock AS | Real estate | 2014 |
| Herock Flow Technologies AS | Professional & scientific | 2020 |
| Herock Holding AS | Real estate | 1989 |
| Hgi AS | Professional & scientific | 2004 |
| Hoffsen Holding AS | | 2023 |
| Hoggorm Norway AS | Wholesale & retail | 2026 |
| Holstconsult AS | Professional & scientific | 2005 |
| Holthe Anlegg AS | Construction | 2016 |
| Holthe Utleie AS | Administrative & support | 2021 |
| Horgenlia Holding AS | Real estate | 2022 |
| Horgenlia Veglag 1 SA | Real estate | 2014 |
| HS Mur AS | | 2022 |
| Hungnes & Co Da | Wholesale & retail | 1992 |
| Hverdagsforvaltning AS | Professional & scientific | 2026 |
| Høiås Invest AS | Real estate | 2014 |
| Ikma AS | Administrative & support | 2004 |
| Imatech Holding AS | Construction | 2012 |
| Impact-El Holding AS | Construction | 2024 |
| Impet Jerzy Herzberg | Construction | 2005 |
| Invigo AS | Wholesale & retail | 2021 |
| Jae Service AS | Agriculture & fishing | 2015 |
| Jar-Bud Przemyslaw Jarosz | Construction | 2013 |
| Jbygg AS | Construction | 2019 |
| JC Forvaltning 2 AS | | 2025 |
| JC Forvaltning AS | | 2022 |
| Jhsf Holding AS | Information & communication | 2017 |
| Jib Service AS | Manufacturing | 2012 |
| Jonassen VVS AS | Construction | 2025 |
| Jordbærpikene Buskerud AS | Hospitality | 2016 |
| Jori Holding AS | | 2024 |
| JP Eiendom AS | Real estate | 2010 |
| K Bro & Associates AS | Wholesale & retail | 1998 |
| K. Nordskog Holding AS | | 2024 |
| Kaioba AS | Other services | 2021 |
| Kalosjen Eiendom 2 AS | Real estate | 2022 |
| Kalosjen Eiendom AS | Real estate | 2022 |
| Karjolen AS | Wholesale & retail | 1990 |
| Karlsen Masseberegning AS | Professional & scientific | 2013 |
| Kaspara Invest AS | Financial services | 2021 |
| Kbro Holding AS | | 2025 |
| KG Holding AS | Real estate | 2005 |