| Fjogstad Solskjerming AS | Sandnes | 2020 |
| Fjogstad-Hus AS | Sandnes | 2001 |
| Fjokketass AS | Oslo | 2018 |
| Fjolls Til Fjells AS | Tisleidalen | 2018 |
| Fjoran Bygg AS | Skjånes | 2020 |
| Fjord & Fjell Jernbanenett Tenester AS | Granvin | 2012 |
| Fjord Anlegg AS | Sandefjord | 2018 |
| Fjord Campers AS | Garnes | 2014 |
| Fjord Elektro AS | Stårheim | 2024 |
| Fjord Ingeniører AS | Oslo | 2013 |
| Fjord Maskin AS | Stordal | 2025 |
| Fjord Stillas AS | Stordal | 2022 |
| Fjord Treverk AS | Oslo | 2025 |
| Fjord-Bygg AS | Kristiansand S | 1993 |
| Fjordane Bygg AS | Utvik | 2021 |
| Fjordane Eigedom AS | Førde | 2017 |
| Fjordane Elektro AS | Sandane | 2014 |
| Fjordane Glass AS | Måløy | 2026 |
| Fjordane Isolering AS | Sandane | 2025 |
| Fjordane Varmepumpeservice AS | Sande I Sunnfjord | 2022 |
| Fjordaneglass AS | Måløy | 2022 |
| Fjordbyen Infrastruktur AS | Drammen | 2022 |
| Fjordbygg 1-2-TRE AS | Langfjordbotn | 2025 |
| Fjordcore Vanylven AS | Ålesund | 2026 |
| Fjorden Asfalt AS | Loddefjord | 2024 |
| Fjorden Bygg AS | Sandefjord | 2022 |
| Fjorden Eiendom AS | Trondheim | 2010 |
| Fjorden Rørleggerservice AS | Sandefjord | 2022 |
| Fjordfjell Holding AS | Nesttun | 2022 |
| Fjordfjell Håndverk AS | Nesttun | 2024 |
| Fjordgruppen Holding AS | Oslo | 2019 |
| Fjordgt. 21 AS | Trondheim | 2014 |
| Fjordgård Fiskerihavn AS | Fjordgard | 2019 |
| Fjordheim Og Tufto Byggeservice Ans | Hol | 1997 |
| Fjordklima AS | Vikebukt | 2023 |
| Fjordporten Utbygging AS | Vågland | 2005 |
| Fjordtak AS | Sandefjord | 2025 |
| Fjordvik AS | Lillestrøm | 2022 |
| Fjordvirke AS | Nesøya | 2024 |
| Fjotland Entreprenør AS | Sandnes | 2023 |
| Fjær Maskin AS | Steinkjer | 2013 |
| Fjærekilen Entreprenør AS | Skien | 2021 |
| Fjæstad Anlegg AS | Løten | 2005 |
| Fjøl Design AS | Kleppe | 2022 |
| Fjøsne-Skartun Minimaskin Ans | Leikanger | 1986 |
| Fjøssystemer Bygg AS | Fåvang | 1995 |
| FK Bygg AS | Sandefjord | 2007 |
| FK Marons AS | Algarheim | 2005 |
| FL Anlegg AS | Tomter | 2013 |
| Flaa Bygg Og Innredning AS | Kristiansand S | 2019 |
| Flaa VVS AS | Kristiansand S | 2004 |
| Flaaten Bygg & Montasje AS | Nodeland | 2026 |
| Fladen & Haukalid Bygg AS | Sandnes | 1989 |
| Fladseth AS | Orkanger | 2018 |
| Flag-Bygg AS | Inderøy | 2023 |
| Flage Invest AS | Voss | 2005 |
| Flage Maskin AS | Voss | 2001 |
| Flaget AS | Hokksund | 2009 |
| Flaget Holding AS | Hokksund | 2006 |
| Flaget Utleie AS | Gol | 2013 |
| Flagtvedt Bygg AS | Svelgen | 1995 |
| Flaksvatn Maskin Da | Birkeland | 2005 |
| Flander Elektro AS | Oslo | 2011 |
| Flannum Tradisjonsbygg AS | Holmestrand | 2010 |
| Flare Fire Safety Engineering Limited | Aberdeen Ab12 4Sb Scotland | 2023 |
| Flataker Gruppen AS | Molde | 1992 |
| Flatanger Boligutvikling AS | Flatanger | 2011 |
| Flatanger Rør AS | Flatanger | 2021 |
| Flatdal Bygg AS | Flatdal | 2016 |
| Flatdal Handlaft AS | Flatdal | 2005 |
| Flate AS | Hønefoss | 2026 |
| Flatebygg AS | Evje | 2007 |
| Flateland Bygg AS | Vennesla | 2022 |
| Flaten Bygg AS | Nordberg | 2008 |
| Flaten Bygg Og Service AS | Fjell | 2026 |
| Flaten Maskin AS | Vassenden | 2017 |
| Flatetak Service AS | Steinberg | 2017 |
| Flatholmen Eiendom AS | Ålesund | 2007 |
| Flatlien Holding AS | Dokka | 2020 |
| Flatmo AS | Nordberg | 2024 |
| Flatmo Inneklima AS | Feiring | 2009 |
| Flatmo Inneklima Vestfold Telemark AS | Skien | 2020 |
| Flatmo Rør AS | Oppdal | 2022 |
| Flatmo Rørservice AS | Elnesvågen | 2019 |
| Flatnes AS | Førresfjorden | 2020 |
| Flatnes Maskin AS | Sæbø | 1982 |
| Flatsetøy Maskin AS | Frei | 2025 |
| Flatsetøy Maskin Da | Frei | 2006 |
| Flawer AS | Dalsøyra | 2023 |
| Flea AS | Noresund | 2021 |
| Fleher Bygg AS | Ålesund | 2008 |
| Flekke Bygg AS | Straumsnes | 2026 |
| Flekkefjord Bygg AS | Flekkefjord | 2015 |
| Flekkefjord Bygg Og Anlegg AS | Flekkefjord | 2024 |
| Flekkefjord Elektro AS | Flekkefjord | 1990 |
| Flekkefjord Hage Og Anlegg AS | Flekkefjord | 2014 |
| Flekkefjord Holding AS | Kristiansand S | 2017 |
| Flekkefjord Minilager AS | Flekkefjord | 2023 |
| Flekkefjord Polstring AS | Flekkefjord | 2024 |
| Flekkefjord Rør & Varme AS | Flekkefjord | 2014 |