| Patay Invest AS | Trondheim | 2002 |
| Patchling AS | Oslo | 2026 |
| Patella AS | Dilling | 2019 |
| Pates Renewables NE Ltd Nuf | Cumbernauld G67 3Lp | 2024 |
| Pathfinder AS | Oslo | 2015 |
| Pathways AS | Stavanger | 2024 |
| Pathways Holding AS | Bergen | 2024 |
| Patias Innovation AS | Oslo | 2020 |
| Patientia AS | Arendal | 2017 |
| Patinor AS | Nesbru | 1993 |
| Patlab Digital AS | Oslo | 2017 |
| Patogen AS | Ålesund | 2003 |
| Patonomics AS | Torsken | 2022 |
| Patos AS | Oslo | 2021 |
| Patri Invest & Trading AS | Lillestrøm | 1991 |
| Patriksson Communication AS | Oslo | 2016 |
| Paul a Tutvedt AS | Larvik | 2022 |
| Paul Harbottle Limited | Hartlepool Ts27 4Jy | 2015 |
| Paul Hood | Co 80437-1657 | 1997 |
| Paul Invest AS | Slependen | 2017 |
| Paul Johnson | Ab36 8Ua Strathdon England | 2010 |
| Paul Spencer Technical Services Limited | Middlesbrough Ts5 8Ue | 2012 |
| Paul W Services Ltd | Forfar Dd8 3Aq | 2019 |
| Paulo Silva Teixeira Sousa Conde | Pt-4830-248 Galegos Pvl | 2019 |
| PAULS1 AS | Åros | 2015 |
| Paulsbråten Consult AS | Skarnes | 2022 |
| Paulsen & Nilsen AS | Oslo | 2009 |
| Paulsen Consult AS | Skien | 2000 |
| Paulsen Invest & Management AS | Lommedalen | 2017 |
| Paulsen-Holding AS | Alta | 2018 |
| Paulsrud Consulting AS | Oslo | 2013 |
| Paunan AS | Stathelle | 2025 |
| Pav Holding AS | Mandal | 2013 |
| Pavels Consulting AS | Sandefjord | 2022 |
| Paveto Essens AS | Trondheim | 2003 |
| Pavi AS | Oslo | 2021 |
| Pawel Ladra | Pl-46-320 Praszka | 2023 |
| Pax Life Holding AS | Kristiansand S | 2022 |
| Paxon AS | Haugesund | 2019 |
| Paxpo AS | Porsgrunn | 2018 |
| Paxton AS | Oslo | 2005 |
| Pay Ark AS | Oslo | 2025 |
| Pay Back A/S | Kongsvinger | 1988 |
| Pay Hus AS | Oslo | 2017 |
| Pay Kommunikasjon AS | Vollen | 2025 |
| Payco Services Ltd | La1 1Jz Lancaster | 2015 |
| Payco Tech Limited | Lancashire La1 1Xn England | 2009 |
| Payexp AS | Sofiemyr | 2024 |
| Paymard AS | Trondheim | 2017 |
| Paytec AS | Haugesund | 2012 |
| Paytech Commercial AS | Nesbru | 2012 |
| Paytech Group AS | Nesbru | 2012 |
| Paytime AS | Tønsberg | 2006 |
| Paza Regnskap Og Økonomi AS | Nesøya | 2008 |
| Paìdia - Kultur Og Arbeidsliv AS | Gamle Fredrikstad | 2006 |
| PB Capital AS | Fornebu | 2021 |
| PB Holding AS | Engelsviken | 2006 |
| PB Service AS | Kristiansand S | 2007 |
| PB Tech AS | Oslo | 2021 |
| PBC Oil & Gas | Fr-92200 Neuilly-Sur-Seine | 2018 |
| PBC Stavanger AS | Oslo | 2021 |
| PBD Holding AS | Oslo | 2018 |
| PBF Consulting AS | Langesund | 2026 |
| Pbfoto AS | Stavanger | 2016 |
| PBH Management AS | Egersund | 2020 |
| PBJ Interiør AS | Kodal | 2008 |
| PBL Regnskap AS | Bodø | 2005 |
| Pbo Engineering AS | Kleppestø | 2021 |
| PBP Group - Professional & Business Plus Limited | Cork | 2010 |
| PC Holding AS | Bergen | 2021 |
| PC Tyldum Arkitekter AS | Oslo | 2012 |
| Pca Invest AS | Asker | 2005 |
| PCB Sanering AS | Hokksund | 1998 |
| PCC Projekt | Ee-12618 Tallin | 2020 |
| PCG Invest AS | Oslo | 2018 |
| Pci AS | Lillehammer | 2015 |
| Pci Biotech Holding ASA | Oslo | 2007 |
| PCL Consulting AS | Stabekk | 2023 |
| Pcommerce AS | Fredrikstad | 2026 |
| Pcon AS | Klepp Stasjon | 2014 |
| Pcsb-Co AS | Skjetten | 2015 |
| PCW Invest AS | Sandnes | 2020 |
| PCX AS | Oslo | 1990 |
| Pd&Ms Energy (Aberdeen) Limited | Aberdenn Ab11 5Qh Scotland | 2013 |
| PDC AS | Høvik | 2025 |
| PDC Energy Ltd | Bishopon Pa7 5Fy Scotland | 2020 |
| Pdma AS | Vøyenenga | 2024 |
| Pdmb AS | Vøyenenga | 2024 |
| Pdsl Invest AS | Tolvsrød | 2011 |
| Pe Accounting AS | Oslo | 2025 |
| Pe Consulting AS | Siggerud | 2017 |
| Pe Taylerson Ltd | G3 6Ef Glasgow | 2022 |
| Pea Consult AS | Drammen | 1993 |
| Pea Force Holding AS | Ytre Enebakk | 2026 |
| Peab Support AB | Narvik | 2014 |
| Peace Prize Medal 1988 Limited Nuf | Blomsterdalen | 2018 |
| Peacock & Stargazer AS | Stavanger | 2014 |
| Peacock AS | Oslo | 2021 |
| Peak Accounting Advisory AS | Oslo | 2024 |
| Peak Advisor AS | Drammen | 2023 |