| Ferrum D.O.O | Hr-21000 Split | 2022 |
| Ferrum Packaging AG | Ch-5503 Schafisheim | 2022 |
| Ferrx AS | Trondheim | 2005 |
| Ferske Smakar Førde AS | Førde | 2023 |
| Ferskvarehuset AS | Jessheim | 2007 |
| Fertilizer Holdings AS | Oslo | 2003 |
| Festøy AS | Barstadvik | 2003 |
| Fet Mekaniske AS | Sykkylven | 2025 |
| Feum Adam Wasiluk | Pl 15-806 Bialystok | 2019 |
| Feurer Automation AG | Ch-5432 Neuenhof | 2019 |
| Fevik Steinindustri AS | Fevik | 1991 |
| Feyling Mekaniske Verksted AS | Jaren | 2002 |
| FF Racing AS | Førresfjorden | 2026 |
| FFG Flensburger Fahrzeugbau Gesselschaft MBH | De-24939 Flensburg | 2024 |
| Fglides AS | Oslo | 2018 |
| FH Automation | Dk-8700 Horsens | 2017 |
| FHF Industri & Maskin AS | Prestfoss | 2026 |
| Fi.Ge.Sco. SRL | It-28066 Galliate | 2026 |
| Fia Da | Blommenholm | 2003 |
| Fiber & Industriservice AS | Vadsø | 2017 |
| Fiberfish AS | Tromsø | 2019 |
| Fiberglass AS | Averøy | 2021 |
| Fibo AS | Lyngdal | 1992 |
| Fibo Group AS | Oslo | 2015 |
| Fibo Holding AS | Oslo | 2015 |
| Fiboveien 26 AS | Lyngdal | 2000 |
| Ficate AS | Hundvåg | 2020 |
| Fictech AS | Degernes | 2015 |
| Fido Invest AS | Mjøndalen | 2018 |
| Fieldbus International AS | Oslo | 1993 |
| Fieldmade AS | Oslo | 2016 |
| Fiftytwo AS | Oslo | 2013 |
| Figgjo AS | Figgjo | 1981 |
| Figgjo Ventilasjon AS | Sandnes | 1992 |
| Fiizk Industries AS | Trondheim | 2024 |
| Fiksta AS | Alversund | 2022 |
| Fiktiv Websolutions Ans | Bergen | 2000 |
| Filetfabrikken AS | Hagan | 2022 |
| Filip Gorecki Automation | Pl-40534 Katowice | 2024 |
| Filmdigitalisering AS | Innvik | 2012 |
| Fimek AS | Finnsnes | 2016 |
| Fimek Holding AS | Finnsnes | 2017 |
| Fimreite Sag Og Maskin AS | Sogndal | 1999 |
| Fina AS | Tønsberg | 2019 |
| Finanscontroll AS | Førde | 2012 |
| Fincantieri S.P.A. | It-34121 Trieste | 2010 |
| Finderups Bådebyggeri | Dk-4000 Roskilde | 2008 |
| Findland Trevare AS | Ålen | 2001 |
| Findus Norge AS | Oslo | 1999 |
| Fine Production AS | Grimstad | 2006 |
| Fineartprint AS | Sandnes | 2018 |
| Finefish AS | Sandshamn | 1996 |
| Fineschmekka SA | Leirsund | 2025 |
| Finio AS | Hyllestad | 2012 |
| Finio Drift AS | Sørbøvåg | 2023 |
| Finn Brynildsrud & Sønner AS | Moss | 1980 |
| Finn Hunstad AS | Svinndal | 1980 |
| Finn-Power OY | 62201 Kauhava | 2010 |
| Finnair Technical Services OY | Fi-01530 Vantaa | 2023 |
| Finncontractor OY Nuf | Fi-65410 Sundom | 2024 |
| Finneid Sveis Eiendom AS | Fauske | 2019 |
| Finneid Sveiseverksted AS | Fauske | 2003 |
| Finnfjord AS | Finnsnes | 1983 |
| Finnjo AS | Skien | 2012 |
| Finnli-Stuggu Ans | Sørli | 1999 |
| Finnmar AS | Båtsfjord | 2019 |
| Finnmark Hydrogen AS | Kirkenes | 2024 |
| Finnmark Kjøtt AS | Hammerfest | 2009 |
| Finnmark Maskinteknikk AS | Tverrelvdalen | 2026 |
| Finnmark Rein AS | Tana | 1992 |
| Finnmark Service Og Utleie AS | Havøysund | 2024 |
| Finnmark Ved AS | Jarfjord | 2018 |
| Finnsitt AS | Os | 2005 |
| Finnskog Emner AS | Gjesåsen | 2002 |
| Finnskog Skinn AS | Grue Finnskog | 1995 |
| Finnskogskigard AS | Austmarka | 2022 |
| Finnsnes Interiør & Møbler AS | Finnsnes | 1997 |
| Finntak OY AB Nuf | Fi-68500 Kronoby | 2025 |
| Finny Sirevaag AS | Åna-Sira | 1988 |
| Finnås Utstyr & Tjenester AS | Finnås | 2022 |
| Finnøy Betong AS | Finnøy | 2014 |
| Finnøy Gear & Propeller AS | Harøy | 1990 |
| Finnøy Pizza AS | Finnøy | 2018 |
| Finotech AS | Kirkenes | 2018 |
| Finshus & Pedersen AS | Aksdal | 2026 |
| Fiolinbygger Jacob Von Der Lippe AS | Oslo | 2007 |
| Fiolinmaker Lydie Sauzet-Luthier AS | Bosberg | 2026 |
| Fire Go GmbH | De-52477 Alsdorf | 2022 |
| Fire Makroner AS | Trysil | 2020 |
| Firema Trasporti S.P.A Nuf | It-80100 Napoli | 2006 |
| Firenor AS | Kristiansand S | 2010 |
| Firex AS | Valderøya | 2019 |
| Firma Ogolnobudowlana Krysztof Potoniec | Pl-34606 Swidnik | 2022 |
| Firma Thomas Linholm | Fi-22120 Mariehamn | 2024 |
| Firmenich Bjørge Biomarin AS | Ellingsøy | 2002 |
| First Seafood AS | Oslo | 2014 |
| Fis Chemicals Limited | Aberdeen Ab21 9Tn Scotland | 2025 |
| Fish-House AS | Dolmøy | 2025 |
| Fishfarming Innovation AS | Smøla | 2014 |
| Fisk & Brød AS | Follese | 2024 |