| Pasienthotell AS | Hospitality | 2005 |
| Pastabakeriet No Da | Hospitality | 2002 |
| Pastis Holding AS | Financial services | 2015 |
| Patata AS | Real estate | 2026 |
| Patriark AS | | 2013 |
| Paulsens AS | | 2023 |
| Pavillion AS | Hospitality | 1997 |
| Pawn AS | Administrative & support | 2023 |
| PB Industrier AS | Wholesale & retail | 1998 |
| PB Norge Drift AS | Hospitality | 2014 |
| PB Norge Drift Holding AS | Wholesale & retail | 2017 |
| PB Norge Holding AS | Wholesale & retail | 2015 |
| PCP. Norge AS | Wholesale & retail | 1975 |
| PCW Invest AS | Professional & scientific | 2020 |
| Pearla AS | Wholesale & retail | 2022 |
| Peasee Invest AS | | 2021 |
| Peder Saxes Gate 18 AS | Real estate | 2020 |
| Pedersgaten 38 AS | Real estate | 2015 |
| Pedersgaten Holding AS | Real estate | 2015 |
| Pedro Franca AS | Health & social care | 2024 |
| Peel Development AS | Information & communication | 2025 |
| Peiskongen Eiendom AS | Real estate | 2025 |
| Pelly Workwear Stavanger AS | Wholesale & retail | 2007 |
| Pels Og Kostyme AS | Manufacturing | 2022 |
| Pels- Og Luemagasinet AS | Wholesale & retail | 1967 |
| Pema Holding AS | Real estate | 2005 |
| Pengebinge AS | | 2022 |
| Pengecompagniet AS | | 2016 |
| Pengecompagniet II AS | Professional & scientific | 2015 |
| Pengecompagniet III AS | | 2015 |
| Penpal AS | Professional & scientific | 2022 |
| People Holding AS | | 2022 |
| Per Ellingsen AS | Real estate | 1979 |
| Per Ivar Birkeland AS | Professional & scientific | 2005 |
| Perental AS | Manufacturing | 2019 |
| Perlero AS | Financial services | 2005 |
| Perpetual Invest AS | Wholesale & retail | 2022 |
| Peter Bull Consulting AS | Information & communication | 2026 |
| Peter Pan AS | Information & communication | 2020 |
| Petite AS | Hospitality | 2015 |
| Petko Drilling & Well Advisory AS | Professional & scientific | 2025 |
| Petobia AS | Real estate | 2006 |
| Petro.No AS | Information & communication | 2017 |
| Petroform AS | Professional & scientific | 2007 |
| Petrosam AS | Professional & scientific | 2006 |
| Petrovalves SRL | | 1995 |
| PFH Holding AS | Wholesale & retail | 2023 |
| PG Byggeservice AS | Construction | 2023 |
| Phal AS | | 2025 |
| Pharmadirect AS | Information & communication | 2024 |
| PHG Design AS | Professional & scientific | 2015 |
| Phoenix Rental AS | Wholesale & retail | 2018 |
| Phoinix Management AS | | 2024 |
| Phoinix Property I AS | Real estate | 2024 |
| Phone Holding AS | Financial services | 2005 |
| Phonelab AS | Other services | 2016 |
| Photo Net Ans | Professional & scientific | 1997 |
| Piano Service AS | Wholesale & retail | 2000 |
| Pias Maskinstasjon AS | Agriculture & fishing | 2015 |
| Picturama AS | Information & communication | 2023 |
| Picual AS | Real estate | 2014 |
| Pigaloppa Da | Professional & scientific | 2007 |
| Piggy Bankas AS | | 2018 |
| Pim Holding AS | | 2019 |
| Pioneerinvest AS | | 2024 |
| Pipespesialisten Stolt Andersen Da | Construction | 2008 |
| Pipetech Holdings Norway AS | Administrative & support | 2018 |
| Pipetech International AS | Administrative & support | 1988 |
| Piqo AS | | 2020 |
| Piratos AS | Financial services | 2018 |
| Piri AS | Professional & scientific | 2005 |
| Pizza Kvadrat AS | Hospitality | 2025 |
| Pizza Angels AS | Wholesale & retail | 2013 |
| Pizzabakeren Holding AS | Wholesale & retail | 2007 |
| Pizzabakeren Invest AS | Administrative & support | 2003 |
| Pizzatorget AS | Hospitality | 2004 |
| Placeholder AS | Information & communication | 2019 |
| Plagiat Bar AS | Hospitality | 2020 |
| Plain Well Engineering AS | Professional & scientific | 2024 |
| Plaipetch Ørenesehals-Klinikk AS | Health & social care | 2019 |
| Planeten Frisør AS | Other services | 2001 |
| Planknorge AS | Wholesale & retail | 2025 |
| Planless AS | Information & communication | 2025 |
| Plonka Hus Og Hage AS | Construction | 2021 |
| Plus Ultra AS | Professional & scientific | 2020 |
| Pluzz AS | Education | 2014 |
| PM Auto AS | Wholesale & retail | 2022 |
| PM International Suppliers AS | Wholesale & retail | 2023 |
| PM Sandnes AS | Real estate | 2023 |
| PMF Utleie AS | Construction | 2019 |
| PMT AS | Professional & scientific | 2013 |
| Pokal Shipping AS | Agriculture & fishing | 2018 |
| Polybo AS | Manufacturing | 2008 |
| Polybo China AS | Professional & scientific | 2020 |
| Polypp AS | | 2019 |
| Pontus AS | Hospitality | 2017 |
| Pony Holding AS | | 2025 |
| Porsholen 2 SA | Education | 1987 |
| Portsystem AS | Construction | 2009 |
| Pota Lova AS | Hospitality | 2025 |