| Framover AS | Frosta | 2019 |
| Franck AS | Sogndal | 2020 |
| Franz Gitter AS | Larvik | 2019 |
| Frattasio Skår AS | Sogndal | 2010 |
| Fredensborgklinikken AS | Bodø | 2013 |
| Fredfoss Legesenter AS | Vestfossen | 2019 |
| Fredfoss Legesenter AS | Vestfossen | 2026 |
| Fredholt Legesenter AS | Drammen | 2014 |
| Fredly Omsorg AS | Larvik | 2025 |
| Fredrik Akre Holding AS | Furnes | 2023 |
| Fredrik Eng Holding AS | Elverum | 2021 |
| Fredriksen Legetjenester AS | Hafslundsøy | 2024 |
| Fredriksen Svarliaunet Helse AS | Nesbru | 2021 |
| Fredrikshald Fysioterapi AS | Halden | 2013 |
| Fredrikstad Hjertesenter AS | Kråkerøy | 2015 |
| Fredrikstad Lungeklinikk AS | Fredrikstad | 2026 |
| Fredrikstad Naprapat- Og Hudpleieklinikk AS | Gamle Fredrikstad | 2010 |
| Fredrikstad Osteopati AS | Fredrikstad | 2005 |
| Fredrikstad Rygg Og Leddsenter AS | Fredrikstad | 2009 |
| Fredrikstad Tannhelse AS | Rolvsøy | 2016 |
| Fredrikstad Tannlegesenter AS | Kråkerøy | 2017 |
| Fredrikstad Øre-Nese-Hals AS | Rolvsøy | 2025 |
| Fredrikstad Øyelegekontor AS | Fredrikstad | 2015 |
| Fredrikstad Øyelegesenter AS | Fredrikstad | 2025 |
| Freedog AS | Tønsberg | 2018 |
| Freeliving AS | Sortland | 2005 |
| Frei Legesenter Da | Frei | 2010 |
| Freidun Karami Tannlege AS | Billingstad | 2019 |
| Frekam AS | Hafrsfjord | 2005 |
| Frekhaug Fysioterapisenter AS | Frekhaug | 2004 |
| Frekhaug Tannklinikk AS | Frekhaug | 2024 |
| Frem Aft AS | Bodø | 2022 |
| Frema AS | Stathelle | 2016 |
| Fremgang Fysioterapi AS | Lørenskog | 2025 |
| Fremja AS | Oslo | 2014 |
| Fremmi Fot Og Helseklinikk AS | Ålesund | 2025 |
| Fremtids Kollektivet Ans | Treungen | 2000 |
| Fremtidsfabrikken Innlandet AS | Nordre Toten | 2024 |
| Fresenius Kabi AB | Se-751 74 Uppsala | 2019 |
| Fresenius Kabi Deutschland GmbH | De-61352 Bad Homburg V.D. Höhe | 2020 |
| Fresh Up Klinikken AS | Egersund | 2019 |
| Fresk Fysioterapi AS | Inderøy | 2016 |
| Fretex Jobb Og Oppfølging AS | Sandnes | 2017 |
| Frida Kvikne Dotterud AS | Lillehammer | 2018 |
| Friisebrygga Legesenter AS | Porsgrunn | 2012 |
| Frikasa Invest AS | Oslo | 2021 |
| Frikatoden AS | Alta | 2016 |
| Frikult Omsorg AS | Mo I Rana | 2017 |
| Friluftslegen AS | Oslo | 2025 |
| Frimed AS | Molde | 1994 |
| Frisjå AS | Fyllingsdalen | 2014 |
| Frisk & Rask AS | Sauda | 1996 |
| Frisk AS | Sandefjord | 2023 |
| Frisk Fysioterapi AS | Trondheim | 2001 |
| Frisk Helse AS | Oslo | 2017 |
| Frisk Helseklinikk AS | Ålgård | 2012 |
| Frisk I Fron Treningssenter AS | Vinstra | 2003 |
| Frisk Kiropraktikk AS | Svolvær | 2020 |
| Frisk Legekontor AS | Oslo | 2012 |
| Frisk Og Rask Klinikken AS | Fredrikstad | 2020 |
| Frisk Og Sprek AS | Vettre | 2017 |
| Frisk Sandefjord AS | Skien | 2016 |
| Frisk Tannhelse AS | Tolvsrød | 2023 |
| Friske Føtter AS | Vinterbro | 2016 |
| Friskere Ansatt AS | Kristiansand S | 2024 |
| Friskere Helgeland AS | Vega | 2024 |
| Friskgården AS | Steinkjer | 2002 |
| Friskgården Helgeland AS | Mosjøen | 2019 |
| Friskgården Namdal AS | Grong | 2002 |
| Friskgården Nidaros AS | Trondheim | 2008 |
| Friskgården Rana AS | Mo I Rana | 2006 |
| Friskgården Stod AS | Steinkjer | 1989 |
| Friskgården Utvikling AS | Steinkjer | 2004 |
| Frisklivshelse AS | Vennesla | 2023 |
| Friskus Frisklivsenter AS | Løten | 1996 |
| Friskus Fysioterapi AS | Stavanger | 2020 |
| Fritia AS | Halden | 2022 |
| Fritzøe Klinikk Allmennleger AS | Larvik | 2000 |
| Fritzøe Klinikk Spesialister AS | Larvik | 2017 |
| Frivillig Inderøy SA | Inderøy | 2010 |
| Frode Grøndahl AS | Sandefjord | 2005 |
| Frode Hagen AS | Lier | 2012 |
| Frode Molnes AS | Oslo | 2023 |
| Frode Oppøyen AS | Charlottenlund | 1998 |
| Frogner Fysioterapi & Akupunktur AS | Oslo | 2020 |
| Frogner Helsesenter AS | Oslo | 2008 |
| Frogner Hudklinikk AS | Oslo | 2017 |
| Frogner Kiropraktorklinikk AS | Oslo | 2003 |
| Frogner Medisinske Institutt Da | Frogner | 2008 |
| Frogner Spesialistsenter AS | Oslo | 2026 |
| Frogner Tannhelse AS | Oslo | 2024 |
| Frogner Tannklinikk AS | Oslo | 2017 |
| Frogner Tannlegesenter AS | Frogner | 2018 |
| Frognerlegene AS | Frogner | 2018 |
| Froi AS | Bodø | 2022 |
| Fromreide Fysioterapi AS | Kjerrgarden | 2025 |
| Fromreide Legesenter Da | Kjerrgarden | 2007 |
| Froyet AS | Tønsberg | 2026 |
| Fruit Salad Holding AS | Eidsvoll | 2019 |
| Fryd Fotklinikk AS | Mo I Rana | 2024 |