| Pax Life Holding AS | Professional & scientific | 2022 |
| Paxe AS | | 2023 |
| Pay Kasse AS | Real estate | 2025 |
| PB Service AS | Professional & scientific | 2007 |
| Pcøb Holding AS | Manufacturing | 2005 |
| PD Alme Holding AS | Real estate | 2021 |
| Peach Holdings AS | Wholesale & retail | 2020 |
| Peanøttsmørbutikken AS | Wholesale & retail | 2023 |
| Pedara Holding AS | | 2026 |
| Pedersens Vaabenlager AS | Wholesale & retail | 2002 |
| Pedika Invest AS | Professional & scientific | 2001 |
| Pedsystem AS | Education | 2003 |
| Peersen Fysioterapi AS | Health & social care | 2017 |
| Pegasus Holding AS | Professional & scientific | 2006 |
| Pegelo AS | | 2001 |
| Pely Holding AS | Real estate | 2005 |
| Pemasol Agder - Bjærshult AS | Construction | 2018 |
| Penac Norway Ans | Wholesale & retail | 1995 |
| Pengvin AS | Information & communication | 2016 |
| Pentagon Freight Services AS | Transport & logistics | 2011 |
| Pentagon Holding AS | Financial services | 2017 |
| Pentagon Marine AS | Transport & logistics | 2023 |
| Pentagon North Europe AS | Transport & logistics | 2014 |
| Pentagon Transport AS | Transport & logistics | 2013 |
| Pentagon Transport Nordic AS | Transport & logistics | 2021 |
| Penthoops Ans | Wholesale & retail | 2020 |
| People of Tomorrow AS | Wholesale & retail | 2018 |
| Pepshi Malerfirma AS | Construction | 2012 |
| Per Erdvik AS | Wholesale & retail | 2000 |
| Per Hagen AS | Wholesale & retail | 1987 |
| Per Hagen Dekksenter AS | Wholesale & retail | 2026 |
| Per Hagen Eiendom AS | Real estate | 1999 |
| Per Knut Fagerli AS | Financial services | 2017 |
| Per Ole Hansen AS | Administrative & support | 2023 |
| Per Øgrey AS | | 2022 |
| Percept AS | Professional & scientific | 2022 |
| Percept Hive Holding AS | | 2025 |
| Perev AS | | 2024 |
| Perfect Move Invest AS | | 2019 |
| Perfect Move Konsulent AS | Information & communication | 2025 |
| Perfekte Produkter AS | Wholesale & retail | 2014 |
| Performance Plus AS | Education | 2024 |
| Pernille Ribe Holding AS | | 2026 |
| Pernilles Ultra AS | Health & social care | 2024 |
| Perspektivr AS | Professional & scientific | 2023 |
| Persto Invest AS | | 2021 |
| Pet Supply AS | Wholesale & retail | 2024 |
| Peter Hamre AS | Real estate | 2017 |
| Peter Løvaas Da | Real estate | 1917 |
| Peter Løvaas Eiendom AS | Real estate | 2011 |
| Peter Løvaas Transport AS | Transport & logistics | 1999 |
| Petlund Consulting AS | Professional & scientific | 2020 |
| Petlund Holding AS | Real estate | 2021 |
| Petra Eiendom AS | Real estate | 2014 |
| Petra Tech Da | Professional & scientific | 2025 |
| Petrak AS | Professional & scientific | 2022 |
| Petratech AS | Professional & scientific | 2026 |
| Petroman Invest AS | Real estate | 1998 |
| Petter Andersen Holding AS | | 2022 |
| PGB Holding AS | Professional & scientific | 2024 |
| PH Elektro AS | Construction | 2023 |
| Phileas Fogg Norge AS | Professional & scientific | 1995 |
| Phillipson Health Services AS | Health & social care | 2017 |
| Phonero Distribusjon AS | Information & communication | 2008 |
| Photoworld Media AS | Professional & scientific | 2023 |
| Pia & Co AS | Other services | 2016 |
| Picazzo Frisør AS | Other services | 2020 |
| Pictoryland AS | Information & communication | 2017 |
| Pictorytale AS | Information & communication | 2017 |
| Pictorytale Studios AS | Information & communication | 2020 |
| Piece Ans | Professional & scientific | 2008 |
| Pieder Ro Holding AS | Real estate | 1996 |
| Pilar Musikkforlag AS | Information & communication | 2025 |
| Piloni AS | | 2022 |
| Pimlico AS | Financial services | 2018 |
| Pindsleveien 5 AS | Real estate | 2015 |
| Pindsleveien AS | Real estate | 2006 |
| Pink by Utseende.No Kristiansand AS | Wholesale & retail | 2024 |
| Pink Cosmetics AS | Information & communication | 2021 |
| Pinklink AS | Wholesale & retail | 2023 |
| Pinvest AS | Professional & scientific | 2018 |
| Pip AS | Health & social care | 2023 |
| Pipe Tech AS | Professional & scientific | 1996 |
| Piraja AS | Agriculture & fishing | 2021 |
| Piri-Piri Kristiandsand AS | Hospitality | 2018 |
| Pis Aller AS | Wholesale & retail | 2024 |
| Piston Service AS | Real estate | 2008 |
| Pitstop Antirust Og Bilpleie AS | Other services | 2005 |
| Pitstop Eiendom AS | Real estate | 2007 |
| Pixel Websystemer Da | Information & communication | 2006 |
| Pixelwave Holding AS | | 2005 |
| Pixii AS | Professional & scientific | 2018 |
| Pizza & Show AS | Hospitality | 2019 |
| Pizzapioneren AS | Hospitality | 2023 |
| PJ Lo Holding AS | | 2023 |
| Pjur Eiendom AS | Real estate | 2014 |
| PKS Eiendom AS | Real estate | 2006 |
| PKS Trafikk AS | | 2023 |
| PKW AS | Financial services | 2017 |
| Placon Je AS | | 2019 |