| Borealis Group Services AS | Administrative & support | 2007 |
| Borealis Polymers NV | Wholesale & retail | 1995 |
| Borealis Polyolefine GmbH Nuf | Wholesale & retail | 2004 |
| Bothorsberg Holding AS | | 2019 |
| BRB Bygg AS | Construction | 2008 |
| Bredo Invest AS | | 2026 |
| Breisand Va-Drift SA | Water & waste | 2015 |
| Brendemo Og Stubseid Ans | | 1994 |
| Brenna Stasjon AS | Real estate | 2015 |
| Brevigstrand Camping AS | Hospitality | 2020 |
| Brevik Elektro AS | Construction | 2019 |
| Brevik Shipping AS | Transport & logistics | 1991 |
| Brevikstrand Båt AS | Wholesale & retail | 2004 |
| Brevikstrand Båthavn Da | Real estate | 2005 |
| Brokelandsheia Handelspark AS | Real estate | 2023 |
| Brotorvet Bil Og Båtpleie AS | Other services | 2013 |
| Brotorvet Bilpleie AS | Other services | 2021 |
| Brotorvet Helsekost AS | Wholesale & retail | 2025 |
| Brotorvet Mat AS | Wholesale & retail | 2015 |
| Brotorvet Tannklinikk AS | Health & social care | 2014 |
| Brotorvet Ur Og Smykker AS | Wholesale & retail | 2004 |
| Brødrene Nilsen Tømrerfirma Ans | Construction | 1994 |
| Bskaara AS | | 2026 |
| Bunes Fryselager AS | Transport & logistics | 2012 |
| BWS AS | | 2025 |
| Bytelab AS | Information & communication | 2024 |
| Bamble Mekaniske Industri AS | Manufacturing | 1984 |
| Can Help AS | Arts & recreation | 2023 |
| Celine Ellefsen AS | Professional & scientific | 2026 |
| Cervi AS | Construction | 2023 |
| Chauffeur Trafikkskole AS | Education | 2022 |
| Chcton Holding AS | Construction | 2025 |
| Chremimar AS | Real estate | 2005 |
| Chris Evert Byggtjenester AS | Construction | 2025 |
| Christoffer Vatle AS | Construction | 2026 |
| Christoffer Vatle Holding AS | | 2025 |
| CM Holding AS | Real estate | 2005 |
| Conteck AS | Wholesale & retail | 2015 |
| Cranemaster AS | Professional & scientific | 1991 |
| Creer AS | Real estate | 2010 |
| Creer Omsorg AS | Health & social care | 2020 |
| Crobroby AS | Professional & scientific | 2019 |
| Croft AS | Construction | 2022 |
| Croft Golfsimulator AS | Administrative & support | 2025 |
| Croftholmen AS | Real estate | 2025 |
| Cuthelp AS | Manufacturing | 2024 |
| Cyrustwo AS | Information & communication | 2025 |
| Da Vinskiåsen Næring AS | Real estate | 2020 |
| Daal AS | Financial services | 2012 |
| Datalent AS | Information & communication | 1991 |
| David Eiendom AS | Real estate | 2007 |
| Deb Bamble AS | Real estate | 2024 |
| Design and Repair AS | Manufacturing | 2025 |
| Din Arbeidshelsepartner AS | Information & communication | 2026 |
| Din Eiendomspartner AS | Real estate | 2011 |
| Disaiq Invest | | 2023 |
| Disaiq Nuf | Professional & scientific | 2023 |
| Ditlefsen Bygg AS | Construction | 2026 |
| Ditlefsen Holding AS | | 2026 |
| DK Eiendom AS | Real estate | 2018 |
| Doffeline AS | Wholesale & retail | 2022 |
| Doormax AS | Wholesale & retail | 2009 |
| DR Ragnhild Landsend Monsen AS | Health & social care | 2010 |
| Duray AS | Real estate | 1988 |
| DVH Eiendom AS | Real estate | 2015 |
| Dynamittveien 11 AS | Real estate | 2021 |
| Dyreklinikken I Bamble AS | Professional & scientific | 2008 |
| Dyrekompaniet AS | Professional & scientific | 2015 |
| E-Nerd AS | Professional & scientific | 2019 |
| Edwards Invest AS | | 2022 |
| Egell-Johnsen Mat AS | Wholesale & retail | 2015 |
| Eika Feeder AS | | 2016 |
| Eikelia Va-Lag SA | Water & waste | 2018 |
| Ekornveien Holding AS | Real estate | 2025 |
| Eksoterm AS | Administrative & support | 2002 |
| Eksoterm Øst AS | Professional & scientific | 2024 |
| Ekstrand Eiendom AS | Real estate | 1974 |
| Ekstrand G V Eiendom AS | Real estate | 2025 |
| Ekstrand Holding AS | Real estate | 2005 |
| Ekstrand Investering AS | Manufacturing | 2020 |
| Ekstrand Verksted AS | Manufacturing | 2020 |
| El Service Grenland AS | Construction | 2008 |
| Elida AS | Real estate | 2014 |
| Entirebody Coaching AS | Education | 2021 |
| Ergotest Innovation AS | Professional & scientific | 2009 |
| Espeland Investments AS | | 2026 |
| Etha AS | Information & communication | 2017 |
| Exal AS | Wholesale & retail | 2021 |
| Eze AS | Wholesale & retail | 2024 |
| F1-3 EV32 AS | Real estate | 2022 |
| F1-3 Holding AS | Administrative & support | 2021 |
| F1-3 Yr AS | Administrative & support | 2022 |
| Fagerheimlåven AS | Real estate | 2024 |
| Felix Invest AS | Real estate | 1981 |
| Feltspatcompagniet AS | Real estate | 2005 |
| FF Energi AS | | 2018 |
| Fg-Tech AS | Wholesale & retail | 2016 |
| Fga Holding AS | | 2023 |
| Finko AS | Professional & scientific | 2023 |
| Fiskebåten Siri AS | Agriculture & fishing | 2021 |