| Enviro VVS AS | Construction | 2022 |
| Eny Invest AS | Wholesale & retail | 2025 |
| Epic Ventures AS | Professional & scientific | 2025 |
| Eps AS | Construction | 2009 |
| Erica AS | | 2021 |
| Erik Iversen Eiendom AS | Real estate | 2015 |
| Erik Iversen Holding AS | Real estate | 2013 |
| Eriksen Fotograf AS | Professional & scientific | 2025 |
| Erling Rød Eiendom AS | Real estate | 1961 |
| Eroticum Ans | Wholesale & retail | 2004 |
| Etm AS | Transport & logistics | 2010 |
| European Logistics Security Da | | 2000 |
| Everything Counts AS | Professional & scientific | 2014 |
| Excalibur Transport AS | Transport & logistics | 2024 |
| Express Sale AS | Construction | 1995 |
| Extrahott Ltd Nuf | Wholesale & retail | 2021 |
| Fagerhage Holding AS | Administrative & support | 2026 |
| Fagkompetanse Logistikk AS | Transport & logistics | 2012 |
| Fann Miljøteknikk AS | Wholesale & retail | 2014 |
| Feno AS | Information & communication | 2025 |
| Festutstyr AS | Wholesale & retail | 2014 |
| Fine Folk AS | Other services | 2013 |
| Finstad & Teig Ans | Construction | 1999 |
| Fire Fire AS | Construction | 2014 |
| Firemans Guide Da | Wholesale & retail | 2006 |
| Firepot Nordic AS | Wholesale & retail | 2020 |
| Firmitas Holding AS | | 2016 |
| Fitland AS | Wholesale & retail | 2017 |
| Fitnesspoint Askim AS | Arts & recreation | 2017 |
| Fjeldheim Transport AS | Transport & logistics | 2011 |
| Fjelldahl Buss AS | Transport & logistics | 2023 |
| Fjellengen Landbruk AS | Agriculture & fishing | 2023 |
| Fjerdingen Holding AS | Real estate | 2015 |
| Fjesme Dykk AS | Construction | 2022 |
| Fladby Eiendom AS | Wholesale & retail | 2017 |
| Fladby Invest AS | Wholesale & retail | 2016 |
| Flesjå Regnskapskontor AS | Professional & scientific | 2015 |
| Flow Forlag Da | Information & communication | 2022 |
| FM Invest AS | Professional & scientific | 2008 |
| Focus Data AS | Information & communication | 2012 |
| Focus Eiendom AS | Real estate | 2001 |
| Follo Brønnboring AS | Construction | 2001 |
| Follo Hage Og Anlegg AS | Administrative & support | 2022 |
| Foodie AS | Professional & scientific | 2024 |
| Forum AS | Professional & scientific | 1992 |
| Forwood AS | Manufacturing | 2022 |
| Fotgrossisten AS | Wholesale & retail | 2023 |
| Fox Eiendom AS | Real estate | 2021 |
| Fresh Deli Askim AS | Wholesale & retail | 2017 |
| Fresh Deli Rådhusgata AS | Wholesale & retail | 2021 |
| Freyr Holding AS | Financial services | 2018 |
| Friber AS | Real estate | 2015 |
| Fridtjof Nansensgate 3 AS | Real estate | 2024 |
| Frisco Da | Wholesale & retail | 1991 |
| Frogner Bolig Og Eiendomsutvikling AS | Real estate | 2012 |
| Frøhol Brug AS | Manufacturing | 2025 |
| Frøland Mote AS | Wholesale & retail | 2013 |
| Fun House Entertainment AS | Professional & scientific | 2006 |
| Futoro Design Ans | Manufacturing | 1989 |
| Fysioteket Da | Health & social care | 2009 |
| Fény Holding AS | Real estate | 2025 |
| Gaak AS | Transport & logistics | 2022 |
| Gaak Multiservice AS | Transport & logistics | 2026 |
| Gamle Brannstasjon 1924 AS | Real estate | 2020 |
| Garai Hold.Co AS | | 2025 |
| GB Drift AS | Construction | 2021 |
| Geoanlegg AS | Professional & scientific | 2023 |
| GF Innovation AS | Information & communication | 2017 |
| Gilje AS | Real estate | 1975 |
| Glava AS | Manufacturing | 1935 |
| Glowkin Studios AS | Information & communication | 2025 |
| Glånk AS | | 2025 |
| Glød Hudklinikk AS | Other services | 2019 |
| Gnesir AS | | 2025 |
| Good Vibe AS | Information & communication | 2026 |
| Govi | Construction | 2003 |
| Grain AS | Information & communication | 2026 |
| Gramveien 28 AS | Real estate | 2021 |
| Gramveien 31 AS | Real estate | 2019 |
| Gramveien 48 AS | | 2024 |
| Gramveien 76 AS | Real estate | 2026 |
| Gramveien Eiendom AS | Real estate | 2016 |
| Graving Og Grunnarbeid AS | Construction | 2017 |
| Grindi Invest AS | Real estate | 2009 |
| Gromholt Anlegg AS | Construction | 2024 |
| Gryta Catering AS | Hospitality | 2020 |
| Grønliveien K-I-B AS | Professional & scientific | 2016 |
| GT. Holding AS | Real estate | 2013 |
| Guderudgata 1 AS | Real estate | 2007 |
| Guderudkvartalet Eiendom AS | Real estate | 1997 |
| Gulddesign AS | Wholesale & retail | 2009 |
| Gunerius Holding AS | Real estate | 2021 |
| Gunnar Bostrøm Holding AS | Financial services | 2016 |
| Gunnar Karlsen Invest AS | Construction | 1984 |
| Gyllensteen Investment AS | Water & waste | 2016 |
| H Larsen Holding AS | | 2019 |
| H. Granøe Holding AS | | 2021 |
| H.F. Maskin Teknikk AS | Wholesale & retail | 2016 |
| Haalands Garage AS | Wholesale & retail | 2021 |
| Haavik AS | Financial services | 2021 |