| Pure Norway AS | Gjøvik | 2009 |
| Pure Rent AS | Fetsund | 2024 |
| Purenorway License AS | Kristiansand S | 2019 |
| Purepaint | Dk-4100 Ringsted | 2022 |
| Purgato AS | Oslo | 2015 |
| Purus Energy AS | Oslo | 2021 |
| Pust Ventilasjon AS | Oslo | 2024 |
| Pusterom Eventbyrå AS | Oslo | 2015 |
| Pve AS | Frosta | 2023 |
| PW Holding AS | Gjettum | 2011 |
| PWC Strategy & (France) S.A.S | 75017 Paris | 2016 |
| PWC Strategy & Germany GmbH | De-40211 Düsseldorf | 2017 |
| PX Limited Nuf | Stockton On Tees Ts17 6Bf | 2025 |
| Pykeijä HS Drift AS | Bugøynes | 2026 |
| Pynt AS | Kragerø | 2008 |
| Pynt Og Prakt AS | Kvaløysletta | 2024 |
| Pyramidene Reiser AS | Drammen | 2015 |
| Pytten AS | Gol | 2022 |
| Pz-Holding AS | Fevåg | 2019 |
| Park og Anlegg A/S | Trondheim | 1988 |
| Partner Reisebyrå AS | Ålesund | 1988 |
| På Kanten Ans | Voss | 2002 |
| På Lag Med AS | Spydeberg | 2017 |
| Påhåret Gruppen AS | Sandvika | 2007 |
| Pål Pedersen AS | Langesund | 1999 |
| Pål Syvertsen Multiservice AS | Krokstadelva | 2022 |
| Påstell AS | Tranby | 2026 |
| Påtryneteateret Ans | Tromsø | 1997 |
| Pønsj AS | Rådal | 2017 |
| Q Workforce AB Nuf | Se-117 63 Stockholm | 2024 |
| Q-Ling AS | Sandnessjøen | 2020 |
| Q10 Offshore AS | Stavanger | 2017 |
| Q10 Personell AS | Stavanger | 2013 |
| Qaid Tours AS | Oslo | 2024 |
| Qatar Shell GTL Limited | Tananger | 2016 |
| QBS AS | Nodeland | 2014 |
| QCB Holding AS | Lierstranda | 2022 |
| QCB Norway AS | Lierstranda | 2022 |
| Qi Natuurontwikkeling BV Nuf | Nl-6881 Ae Velp | 2025 |
| Qifinity AS | Hokksund | 2025 |
| Qimarox BV | 3846Ce Harderwijk | 2021 |
| Qliro AB Nuf | Oslo | 2024 |
| Qpe AS | Kristiansand S | 2017 |
| QSP AS | Asker | 2018 |
| QT Lokal Tjenester AS | Kleppe | 2026 |
| Quadient Finance Ireland Limited | Ie-Dublin 2 | 2009 |
| Quadient Finance Norge AS | Lørenskog | 2010 |
| Quadrat Bygg AS | Tromsø | 2022 |
| Quadriga Norway - Branch Nuf | 01510 Vantaa | 2016 |
| Qualified People Bergen AS | Bergen | 2024 |
| Qualified People Oslo AS | Oslo | 2012 |
| Qualified Professionals AS | Kristiansand S | 2008 |
| Qualified Professionals Group AS | Kristiansand S | 2007 |
| Qualified Professionals International AS | Kristiansand S | 2024 |
| Qualified Renhold AS | Oslo | 2013 |
| Qualisense AS | Frekhaug | 2026 |
| Quality Communication AS | Bønes | 2023 |
| Quality Groupe AS | Kristiansand S | 2026 |
| Quality Health Care AS | Oslo | 2020 |
| Quality Renhold AS | Laksevåg | 2012 |
| Quality Renholdsservice Da | Mjøndalen | 1998 |
| Quality Security AS | Kråkerøy | 2004 |
| Qualtech Limited | Ie-Galway H91 T020 | 2025 |
| Quentines AS | Åros | 2015 |
| Quero Group AS | Grendi | 2012 |
| Query Response 11 Ltd Nuf | N146Qh, London, Southgate | 2008 |
| Quest Travel AS | Oslo | 2024 |
| Quick Domain Register Ltd | London W1H 6Hn | 2015 |
| Quick Rental AS | Tromsdalen | 2025 |
| Quick Systems Aksjer AS | Eina | 2021 |
| Quick Systems Holding AS | Eina | 2021 |
| Quick Truckservice Utleie AS | Torp | 2025 |
| Quickflange UK Limited | Aberdeen Ab21 7Ga | 2012 |
| Quicksand AS | Oslo | 2008 |
| Quicktur AS | Høvåg | 2025 |
| Quinity B.V. | Nl-3581Cs Utrecht | 2017 |
| Qvale Konuslent & Service AS | Stange | 2026 |
| Qvam-Nilsen AS | Evje | 2013 |
| Qvist Renhold AS | Nordby | 2024 |
| R & E Renhold AS | Haugesund | 2016 |
| R & R Liftutleie Da | Budalen | 2016 |
| R a S Holding AS | Harstad | 2020 |
| R Eiendom & Vedlikehold AS | Karmsund | 2021 |
| R Granbo Invest AS | Flatåsen | 2017 |
| R H Industri | 5500 Middelfart | 2003 |
| R H Rise AS | Hareid | 1993 |
| R Hansen AS | Drammen | 2016 |
| R J Gallagher Ltd | Peterhead Ab42 1B | 2020 |
| R Robberstad Holding AS | Haugesund | 2021 |
| R Utemiljø AS | Tønsberg | 2020 |
| R Walker Consultancy Services Limited | West Sussex Rh10 7Lw | 2020 |
| R Å Invest AS | Vigrestad | 2019 |
| R Å Utleie AS | Vigrestad | 2023 |
| R&E Tjemsland AS | Stavanger | 2024 |
| R&Q Management Services Ltd | Warrington Wa1 1Rg | 2023 |
| R&R Crewing AS | Finnsnes | 2025 |
| R&R Service Da | Øyslebø | 2024 |
| R&S Events AS | Rakkestad | 2026 |
| R-A Maskin AS | Finnsnes | 2017 |
| R. Dale Eigedom AS | Austefjorden | 2021 |