| Pallepartner Nuf | Wholesale & retail | 2009 |
| Panorama Consult AS | Wholesale & retail | 2001 |
| Pap Capital AS | | 2025 |
| Pap Capital II AS | | 2025 |
| Pap-Holding AS | Financial services | 2017 |
| Papirboksen AS | Wholesale & retail | 2026 |
| Pappa Eiendom AS | Real estate | 2026 |
| Park Fysioterapi Da | Health & social care | 2000 |
| Parkgården Seksjon 1 AS | Real estate | 1995 |
| Parkgården Seksjon 2 AS | Real estate | 1995 |
| Paul Henrik Eiendom AS | Administrative & support | 2024 |
| Paviljongen Eiendom AS | Financial services | 2013 |
| PBN Holding AS | | 2025 |
| Pe Redskaper Nuf | Wholesale & retail | 2007 |
| Peco Transport AS | Transport & logistics | 2024 |
| Pehan Produkter AS | Manufacturing | 1996 |
| Pehasi Invest AS | Professional & scientific | 2020 |
| Peik Trading Nuf | Wholesale & retail | 2005 |
| Pek Invest AS | Real estate | 2005 |
| Peledimia AS | Professional & scientific | 2005 |
| Pemu AS | Administrative & support | 2015 |
| Pen Cap AS | Financial services | 2024 |
| Pennesi Cantine Norvegesi AS | Wholesale & retail | 2018 |
| Pennesi Group AS | Wholesale & retail | 2019 |
| Pennesi Holding AS | Wholesale & retail | 2019 |
| Pennesi Natur AS | Agriculture & fishing | 2020 |
| Pepmoss AS | Hospitality | 2016 |
| Perikarp AS | | 2023 |
| Perma-Shine Norge AS | Wholesale & retail | 2001 |
| Personalpartner Arbeid Og Inkludering AS | Health & social care | 2021 |
| Personalpartner AS | Health & social care | 1990 |
| Petar Patarijevic | Construction | 2008 |
| Petax AS | Professional & scientific | 2005 |
| Peter Dekker Installaties BV Nuf | Construction | 2009 |
| Petro Sack Da | Wholesale & retail | 1997 |
| Pettersen Totalservice AS | Construction | 2024 |
| PFR Konsult AS | Information & communication | 2025 |
| Phan Van Tai Bang Ans | Arts & recreation | 1988 |
| Pharma Care Invest AS | | 2023 |
| Phi Phan Holding AS | | 2026 |
| Physical Robotics AS | Information & communication | 2023 |
| Pingvin Utleie AS | Real estate | 2023 |
| Pinn Produksjoner AS | Arts & recreation | 2026 |
| Pitch Perfect AS | Professional & scientific | 2019 |
| Pitsupport AS | Education | 2018 |
| PIX4MEDIA AS | Professional & scientific | 2014 |
| Pixel Perfect AS | Information & communication | 2017 |
| Pixelhospitalet AS | Information & communication | 2002 |
| Pizzakjører'N Norge AS | Manufacturing | 2012 |
| PJ & the Creamtops Ans | Arts & recreation | 2010 |
| Pk-Prosjekt AS | Professional & scientific | 2023 |
| Plainsmen AS | Information & communication | 2024 |
| Plate Paradiset AS | Wholesale & retail | 2021 |
| Plateful 2.0 AS | Wholesale & retail | 2025 |
| Plateful AS | Wholesale & retail | 2017 |
| Pling Eiendom AS | Real estate | 2020 |
| Pluss Regnskap AS | Professional & scientific | 1996 |
| PM Invest AS | Real estate | 2016 |
| PM7 Invest AS | | 2024 |
| Pmu Beauty AS | Other services | 2023 |
| Pogn Invest AS | Professional & scientific | 2019 |
| Pointer AS | Information & communication | 2017 |
| POKAL1 AS | Wholesale & retail | 2014 |
| Polar Escape AS | Real estate | 2024 |
| Polar Seafood Norway AS | Wholesale & retail | 1994 |
| Polytan GmbH Nuf | Construction | 2001 |
| Pongo Eiendom Og Invest AS | | 2024 |
| Pongos Langos AS | Hospitality | 2026 |
| Porten Ur & Gull AS | Wholesale & retail | 2002 |
| Porto Bello AS | Wholesale & retail | 2008 |
| Porto Bello Holding AS | Wholesale & retail | 2021 |
| Poseidon Scandinavia | Construction | 2007 |
| Posesso Eiendom AS | Real estate | 2005 |
| Power Contact AS | Wholesale & retail | 2020 |
| Power Procurement AS | Professional & scientific | 2026 |
| Powerquest Pie Scandinavia AS | Wholesale & retail | 1984 |
| PQX AS | Information & communication | 2014 |
| PQX Media AS | Information & communication | 2017 |
| Praktident AS | Wholesale & retail | 1985 |
| Premium Motorsport Insurance AS | | 2018 |
| Preveda Storkjøkken AS | Wholesale & retail | 2025 |
| Prima Bilpleie AS | Other services | 2018 |
| Primeline AS | Hospitality | 2005 |
| Primero AS | Health & social care | 2013 |
| Prins Christian AS | Real estate | 2019 |
| Pro Byggeservice AS | Construction | 2021 |
| Pro Design Norway Nuf | Wholesale & retail | 2004 |
| Pro Fleet AS | Transport & logistics | 2025 |
| Pro Kompetanse Da | Administrative & support | 1998 |
| Pro-Tax AS | Real estate | 2024 |
| Proark AS | Professional & scientific | 2000 |
| Procura AS | Real estate | 2012 |
| Produksjonen Sin AS | Information & communication | 2013 |
| Profesjonell Byggegruppe AS | Construction | 2025 |
| Proff Hvitevarer AS | Wholesale & retail | 2015 |
| Proff Nett AS | Construction | 2022 |
| Proffen Sport AS | Wholesale & retail | 2022 |
| Progreso AS | Wholesale & retail | 2023 |
| Property Investors Spain AS | Real estate | 2018 |
| Prosjekt - El AS | Transport & logistics | 2018 |