| Fiskher Utvikling AS | Information & communication | 2020 |
| Fitnesspoint Lillesand AS | Arts & recreation | 2020 |
| Fiven Norge AS | Manufacturing | 1964 |
| Fjellvik Tjenester AS | Arts & recreation | 2023 |
| Fjordkroa Stranda AS | Hospitality | 2023 |
| Flikkflakk Tekstiltrykk AS | Manufacturing | 2004 |
| Flis Leggeren AS | Construction | 2006 |
| Florin & Debora Holding AS | | 2026 |
| Flovik Ventures AS | Administrative & support | 2019 |
| Flumill AS | Professional & scientific | 2002 |
| Flumill Invest AS | Professional & scientific | 2023 |
| Flumill IP Holding AS | Professional & scientific | 2020 |
| Fløyheia Va SA | Construction | 2025 |
| Foldvik & Foldvik Holding AS | | 2026 |
| Foldvik & Ommundsen Holding AS | Real estate | 2019 |
| Foldvik Rørleggerforretning AS | Construction | 2001 |
| Fosbæk Holding AS | Real estate | 1927 |
| Fosbæk Invest AS | Real estate | 1986 |
| Fosbæk Sameie Ans | Real estate | 1986 |
| Fosseli NDT AS | Professional & scientific | 2024 |
| Fotterapeuten Thone HR Glamsland AS | Health & social care | 2020 |
| Franks Paller AS | Construction | 2019 |
| Franksson AS | Arts & recreation | 2021 |
| Fresch Investments AS | | 2025 |
| Frigstad Trading AS | Manufacturing | 2019 |
| Friheten AS | | 2026 |
| Frisørkjelleren Lillesand AS | Other services | 2023 |
| Frittgående Selgere AS | Administrative & support | 2020 |
| Frode Aas AS | Financial services | 2008 |
| Frode Kommode AS | Wholesale & retail | 2016 |
| From Holding AS | | 2025 |
| From Økonomi AS | Professional & scientific | 2014 |
| Fru Steens Bedrifter AS | Professional & scientific | 2010 |
| Futurefrogs AS | Professional & scientific | 2013 |
| Fyresmoen 1 AS | Real estate | 2023 |
| G Malmgård AS | Real estate | 2001 |
| Gamle Posthusgården AS | Real estate | 2019 |
| Gatestrand AS | Real estate | 2005 |
| Gaupemyrheia Eiendom AS | | 2018 |
| Gausetangen AS | | 2019 |
| Geheb Conditori Lillesand AS | Hospitality | 2014 |
| Geir Karlsen AS | Real estate | 2013 |
| Gico Holding AS | Real estate | 1973 |
| Githmark Graving & Bryggeservice AS | Agriculture & fishing | 2014 |
| Gitmark AS | Real estate | 2007 |
| Gitmark Utleie AS | Administrative & support | 2023 |
| Gittis Holding AS | | 2022 |
| Glamsland Maskin AS | Construction | 2017 |
| Global Consult & Investment AS | Information & communication | 2007 |
| Global Onsite AS | Manufacturing | 2023 |
| Global Onsite Eiendom AS | Real estate | 2010 |
| Global Onsite Holding AS | Manufacturing | 2023 |
| Gnom Invest AS | | 2020 |
| Goa Vekst AS | | 2021 |
| Gorines AS | Manufacturing | 2000 |
| Govet AS | Professional & scientific | 2025 |
| Govi AS | Wholesale & retail | 2013 |
| Grace Consult AS | Professional & scientific | 2024 |
| Grandal Veiservice AS | Wholesale & retail | 2010 |
| Green Culture AS | Arts & recreation | 2025 |
| Green-Bay AS | Professional & scientific | 2018 |
| Gremsdalen Invest AS | Financial services | 2014 |
| Grimstad Garveri AS | Real estate | 2018 |
| Grønn Oase AS | Administrative & support | 2024 |
| Grønn Prosjektutvikling AS | Professional & scientific | 2022 |
| Grøvan Kraft AS | Energy | 2016 |
| Gurcon Norge AS | Professional & scientific | 2023 |
| Haasund Eiendom AS | Real estate | 2004 |
| Haasund Finans AS | Professional & scientific | 2012 |
| Habika Coaching AS | Education | 2024 |
| Haeg Holding AS | Wholesale & retail | 2022 |
| Hagemiljø & Vedlikehold AS | Administrative & support | 2024 |
| Hamran Energi AS | Professional & scientific | 2022 |
| Handi Aid AS | Wholesale & retail | 2018 |
| Hao Hao Kinarestaurant AS | Hospitality | 2011 |
| Happy Time 1 AS | Hospitality | 2025 |
| Harald Sundsdal Invest AS | Construction | 2017 |
| Havsteinen AS | | 2023 |
| Hawe AS | Professional & scientific | 2018 |
| Hebero AS | Health & social care | 2011 |
| Heia Vann Og Avløp AS | Water & waste | 2025 |
| Heimdal AS | Hospitality | 1998 |
| Heimdal Invest AS | | 2025 |
| Heldal Brygge AS | Real estate | 2012 |
| Heldal Entreprenør AS | Construction | 1996 |
| Heldal Maskin AS | Manufacturing | 2020 |
| Heldal Maskininvest AS | Administrative & support | 1998 |
| Heldal Productions AS | Arts & recreation | 2026 |
| Heldalgruppen AS | Construction | 2005 |
| Helsehuset Lillesand AS | Real estate | 2004 |
| Hersel Gaard Ans | Agriculture & fishing | 2011 |
| HGH Tek AS | Professional & scientific | 2017 |
| HJS Eiendom AS | Real estate | 2023 |
| HJS Holding AS | Real estate | 2020 |
| Hjulius Trading AS | Administrative & support | 2016 |
| Honningdamer AS | Agriculture & fishing | 2022 |
| Horisont Eiendom AS | Real estate | 2012 |
| Horisont Eiendom Holding AS | | 2025 |
| Horisont Utvikling 2 AS | Real estate | 2022 |
| Horisont Utvikling AS | Real estate | 2016 |