| Bygg-Innovasjon AS | Construction | 2022 |
| Byggmester Og Takstmann Haagensen AS | Construction | 2015 |
| Børtjernvegen SA | Real estate | 2022 |
| Cagista AS | Information & communication | 2019 |
| Caribe Kantine Og Renhold AS | Hospitality | 2016 |
| Caspar Seip AS | Education | 2021 |
| Castello Invest AS | | 2016 |
| Cathrine With Holm AS | Education | 2025 |
| Cellobject AS | Information & communication | 2017 |
| Cetchapp AS | Information & communication | 2023 |
| Charlies Kebab House Strømmen AS | Hospitality | 2021 |
| Chili Strømmen AS | Wholesale & retail | 2012 |
| Christian Sebelien Holding AS | | 2026 |
| Christina Bunad Nuf | Manufacturing | 2021 |
| City Bemanning AS | Administrative & support | 2016 |
| Citytransport AS | Transport & logistics | 2021 |
| CK Home Invest AS | | 2020 |
| CLJ AS | Wholesale & retail | 2020 |
| Cloudland AS | Information & communication | 2021 |
| Coldlight AS | | 2026 |
| Companys Strømmen AS | Wholesale & retail | 2015 |
| Cousins AS | Other services | 2019 |
| Creamy Food Truck AS | Hospitality | 2023 |
| Creamy Strømmen AS | Hospitality | 2021 |
| Cumulo AS | Information & communication | 2013 |
| Cyentific AS | Information & communication | 2022 |
| Danam AS | Real estate | 2026 |
| Davami Holding AS | Real estate | 2019 |
| Dawadi Invest AS | Real estate | 2020 |
| Deko A/S | Wholesale & retail | 1988 |
| Dermatech AS | Wholesale & retail | 2023 |
| Design Bad & Oppusing AS | Construction | 2020 |
| Det Dekkede Bord Ans | Administrative & support | 2005 |
| Det Islamske Forlaget Da | Information & communication | 2016 |
| Dianas Glow Studio AS | Other services | 2025 |
| Diddington AS | Real estate | 2020 |
| Digipro AS | Information & communication | 2013 |
| Dille Holding AS | | 2025 |
| Din Framtid Agency Da | Information & communication | 2025 |
| Din Helsepartner AS | Health & social care | 2019 |
| Dissing Kunstgress Service AS | Construction | 2021 |
| Ditt Skattekammer AS | Wholesale & retail | 2017 |
| Diva Medical Esthetique AS | Health & social care | 2021 |
| DLC Invest AS | Real estate | 2024 |
| DM Company AS | Transport & logistics | 2025 |
| Dont Invest AS | Financial services | 2011 |
| DP Strømmen AS | Hospitality | 2021 |
| DR. Helse Og Laser AS | | 2024 |
| Drmlnd Norge AS | Wholesale & retail | 2026 |
| DS Import Og Eksport AS | Wholesale & retail | 2013 |
| DS Strømmen Invest AS | Construction | 2016 |
| DSD Bygg AS | Construction | 2023 |
| DTC Holding AS | | 2005 |
| Dtdh AS | Information & communication | 2020 |
| Duhok Restaurant AS | Hospitality | 2020 |
| Duplication AS | Wholesale & retail | 2005 |
| Dust Busters AS | Administrative & support | 2025 |
| Dynamikk Bygg AS | Construction | 2020 |
| Eb Gass AS | Wholesale & retail | 2007 |
| Ecoren AS | Transport & logistics | 2018 |
| Eda Elektro Data Romerike AS | Construction | 1987 |
| Ekspertkanalen.No AS | Education | 2024 |
| El Work Ans | Construction | 2004 |
| Elektro Kompis AS | Construction | 2021 |
| Elektroenergi AS | Wholesale & retail | 2004 |
| Elevation Group AS | | 2024 |
| Elevia Helse AS | Health & social care | 2019 |
| Elevkantinen Strømmen Videregående Skole Ans | Hospitality | 1995 |
| Elite Eiendom Utvikling AS | Real estate | 2016 |
| Elite Events AS | Administrative & support | 2018 |
| Elite Group AS | | 2024 |
| Elite Motors AS | Transport & logistics | 2024 |
| Elite Prosjekt AS | Construction | 2017 |
| Elitecoat Bilpleie AS | Other services | 2026 |
| Elva Transport AS | Transport & logistics | 2025 |
| Empet Holding AS | Professional & scientific | 2021 |
| Emrik AS | Financial services | 2013 |
| Encent Capital AS | Financial services | 2018 |
| Enio Invest AS | | 2025 |
| Entréen Næring 1 AS | Real estate | 2018 |
| Entréen Næring 3 AS | Real estate | 2020 |
| Entréen Næring 4 AS | Real estate | 2020 |
| Erigo Consulting AS | Professional & scientific | 2014 |
| Eriksen Kapital AS | | 2023 |
| Erinatey AS | Wholesale & retail | 2025 |
| Esanit AS | Information & communication | 2020 |
| Espen Andreassen Holding AS | Information & communication | 2020 |
| Ethicalis AS | Wholesale & retail | 2025 |
| EU Auto & Transport AS | Wholesale & retail | 2022 |
| Eugenies Invest AS | Financial services | 2015 |
| Event Restauran Paradis AS | Hospitality | 2025 |
| Excel Invest AS | | 2019 |
| Fads Invest AS | | 2019 |
| Fagerborg K34 AS | Real estate | 2017 |
| Family Kjøttbutikk AS | Wholesale & retail | 2024 |
| Farahmand Eiendom AS | Real estate | 2012 |
| Faraj Invest AS | | 2024 |
| Fariba & Laiba Da | Hospitality | 2008 |
| Fast Candy Strømmen Storsenter AS | Wholesale & retail | 2024 |
| Fastlegehuset AS | Health & social care | 2016 |