| Din Kompetanse Fagskole AS | Education | 2018 |
| Din Sushi Larvik AS | Hospitality | 2014 |
| Dlal AS | Professional & scientific | 2023 |
| DOKTORVEI1 AS | Real estate | 2020 |
| Dolven Holding AS | | 2021 |
| Domene AS | Information & communication | 1998 |
| Down Basic AS | Professional & scientific | 2014 |
| Down Town Bowling AS | Arts & recreation | 1991 |
| DP Fitness AS | Education | 2017 |
| DR Lunde AS | Health & social care | 1998 |
| DR. Holth AS | Health & social care | 1994 |
| Dream Path AS | Real estate | 2011 |
| Drivra AS | Professional & scientific | 2026 |
| DRT Holding AS | | 2007 |
| Druehagen AS | Agriculture & fishing | 2012 |
| Druehagen Drift AS | Manufacturing | 2024 |
| Druidenes Hus Larvik SA | Real estate | 1977 |
| Drømmeklubben AS | Education | 2025 |
| Drømmenøstet AS | Wholesale & retail | 2018 |
| DTS Automasjon AS | Construction | 2024 |
| Duvholt AS | Real estate | 2005 |
| Dybwads Rådhus AS | | 2023 |
| Dyreng AS | Administrative & support | 2021 |
| Dør & Vindu Larvik AS | Wholesale & retail | 2024 |
| Døvle Drift AS | Manufacturing | 2025 |
| Døvle Og Gudmundsen Holding AS | Wholesale & retail | 2024 |
| E M S Element Montasje Steinskog AS | Wholesale & retail | 2001 |
| E. Andersen Holding AS | Other services | 2005 |
| Easy Solutions AS | Wholesale & retail | 2021 |
| Ebs Transport AS | Transport & logistics | 1993 |
| Eckholdt Og Mortensen Da | Construction | 2018 |
| Eden - Hagearkitektur & Landskap AS | Administrative & support | 2022 |
| Ee Bygg AS | Real estate | 2024 |
| Eeaa Consulting AS | Professional & scientific | 2022 |
| Eftedal & Kiil AS | Manufacturing | 1999 |
| Eftedal Holding AS | Real estate | 2021 |
| Eftedal Invest AS | Real estate | 2000 |
| Egansti Invest AS | Wholesale & retail | 1984 |
| Egersund Granite AS | Mining & quarrying | 2000 |
| Eggglove AS | Real estate | 2022 |
| Eidsten Vann Og Avløpsanlegg AS | Water & waste | 2017 |
| Eiendom & Arealpartner AS | Real estate | 2026 |
| Eiendomsmegler Henriksen & Sølyst AS | Real estate | 2019 |
| Eiendomsmegler Larvik Og Lardal AS | Real estate | 2015 |
| Eiendomsselskapet Gulset AS | Real estate | 1998 |
| Eifa Holding AS | Real estate | 2005 |
| Eikeland Byggservice AS | Administrative & support | 2024 |
| Eikevall Veilag SA | Real estate | 2020 |
| Eila AS | Real estate | 2006 |
| Eila Eiendomsselskap Ans | Real estate | 1987 |
| Einherjar AS | | 2021 |
| Einherjar Holding AS | | 2024 |
| Eirona AS | Health & social care | 2026 |
| Eise AS | Construction | 2018 |
| Eke Consult AS | Financial services | 2012 |
| Ekenes AS | Administrative & support | 2023 |
| Ekko Fra Fortiden AS | Wholesale & retail | 2025 |
| Eklektika AS | Wholesale & retail | 2020 |
| Ekvall Eiendom AS | Real estate | 2024 |
| Elan Foto AS | Professional & scientific | 2024 |
| Elc Holding AS | | 2020 |
| Eldretjenesten AS | Administrative & support | 2021 |
| Elegant Media AS | Professional & scientific | 2023 |
| Elektro Holding AS | | 1992 |
| Elektro TT AS | Construction | 2004 |
| Elektrokonsult AS | Construction | 2012 |
| Elektronikkdesign AS | Professional & scientific | 2012 |
| Elektropanel AS | Manufacturing | 1995 |
| Elias Robotics AS | Professional & scientific | 2023 |
| Elibra Bil Eksport AS | Wholesale & retail | 2026 |
| Elisabeths Salong AS | Other services | 2014 |
| Elissol AS | | 2021 |
| Elite Eiendom Vestfold AS | Wholesale & retail | 2014 |
| Ellings Kafe AS | Hospitality | 2021 |
| Elom AS | Wholesale & retail | 2021 |
| Elp AS | Financial services | 2017 |
| Else Design AS | Wholesale & retail | 2020 |
| Elvebakken 1 AS | Real estate | 2004 |
| Elveveien 134 AS | Real estate | 2019 |
| Elveveien 136 AS | Real estate | 2014 |
| Elveveien 2 Holding AS | Real estate | 2019 |
| Elveveien 23 AS | Real estate | 2024 |
| Elveveien 26-28 Larvik AS | Real estate | 2012 |
| Elveveien 30 D AS | Real estate | 2018 |
| Elveveien 32 B AS | Real estate | 2018 |
| Elveveien 35 AS | Real estate | 2019 |
| Elveveien 38 Real Estate AS | Wholesale & retail | 2013 |
| Elveveien 40 AS | Real estate | 2013 |
| Elveveien A3 AS | Real estate | 2008 |
| Ema Holding Larvik AS | | 2018 |
| Embeddie AS | Professional & scientific | 2022 |
| Emerald Pearl AS | Manufacturing | 2010 |
| Empet Larvik AS | Professional & scientific | 2019 |
| Endevi AS | Professional & scientific | 2020 |
| Endurance Invest AS | | 2018 |
| Energipark AS | Real estate | 2021 |
| Engene Solar AS | Energy | 2022 |
| Englerud AS | | 2017 |
| Entree AS | Information & communication | 2020 |
| Entreprenørfirma Haakon Skuggedal AS | Construction | 2021 |