| Preg Barnehager Åssiden AS | Drammen | 2022 |
| Preg Barnehager Øygarden Nord AS | Rong | 2011 |
| Preg Åpen Barnehager AS | Trondheim | 2022 |
| Prehospital Consult Ans | Oslo | 2005 |
| Premium PT AS | Oslo | 2021 |
| Prepare. Pathways AS | Byremo | 2026 |
| Prepcamp AS | Oslo | 2023 |
| Present, Healthy, Happy Human AS | Inderøy | 2022 |
| Presis Kjøreteknikk AS | Sylling | 2022 |
| Prestagardskogen Fus Barnehage AS | Stord | 2015 |
| Prestasjonsboost AS | Harestua | 2022 |
| Prestasjonsutvikling AS | Larvik | 2020 |
| Prestebakke Naturbarnehage SA | Kornsjø | 1989 |
| Prestefjellet Barnehage AS | Kirkenes | 1991 |
| Prestegårdsjordet Barnehage SA | Trondheim | 1963 |
| Prestekragen Barnehage AS | Sandefjord | 2014 |
| Prestelva Barnehage SA | Sortland | 1992 |
| Prestera AS | Oslo | 2025 |
| Presthaug Eiendom BHG AS | Haugesund | 2006 |
| Presthaug Fus Barnehage AS | Haugesund | 2018 |
| Prestmosen Fus Barnehage AS | Nannestad | 2018 |
| Presto Training AS | Bodø | 2011 |
| Prestvannet Studentbarnehage AS | Tromsø | 2022 |
| Pretty Fast Promotions Ans | Nøtterøy | 2009 |
| Prevenir AS | Oslo | 2021 |
| Pri - Pedagogikk Rådgivning Innovasjon Da | Ski | 2012 |
| Prime Performance AS | Oslo | 2026 |
| Priority Response AS | Vormedal | 2020 |
| Prios Kompetanse AS | Steinkjer | 2016 |
| Prison Island Norway Nuf | Oslo | 2015 |
| Privatfly No Olimb Da | Oslo | 2004 |
| Privatistgymnaset AS | Stokkøy | 2016 |
| Privatistkompasset AS | Rådal | 2026 |
| PRJ Consulting AS | Volda | 2017 |
| Pro & Con AS | Oslo | 2005 |
| Pro Akt Opplæring Da | Lillestrøm | 1999 |
| Pro Medic Team Norway AS | Hokksund | 2021 |
| Pro Padel Paradis AS | Paradis | 2024 |
| Pro-Utvikling AS | Mosby | 2024 |
| Proaid AS | Askim | 2010 |
| Probioform Norge AS | Oslo | 2017 |
| Problemsolvers AS | Bodø | 2017 |
| Procesformidling Aps Nuf | Dk-8751 Gedved | 2025 |
| Profess: Educational Coaching and Research Support Limited Nuf | Oslo | 2021 |
| Professional Communication AS | Levanger | 2009 |
| Proff Kompetanse AS | Oslo | 2013 |
| Proff Trafikkskole AS | Oslo | 2022 |
| Proff Trening AS | Fjellhamar | 2025 |
| PROFF1 Holding AS | Høyanger | 2021 |
| PROFF1 Kompetanse AS | Høyanger | 2022 |
| Proffaid Norge AS | Sandefjord | 2022 |
| Profotball AS | Godvik | 2018 |
| Projektverkstaden Nordic | 54147 Skövde | 2011 |
| Promedic AS | Lillehammer | 2020 |
| Promethevs AS | Oslo | 2016 |
| Prosci Nordics Aps | Dk-1550 København V | 2022 |
| Prosesskraft AS | Tønsberg | 2014 |
| Prosjekt Yoga AS | Sandane | 2025 |
| Prosjektskolen AS | Oslo | 2004 |
| Prosperum AS | Askim | 2025 |
| Proteseguiden AS | Ski | 2026 |
| Protrain AS | Oslo | 2026 |
| Protrening AS | Stavanger | 2019 |
| Provarsling AS | Veavågen | 2026 |
| Provencereiser Aabel | Kristiansand S | 2013 |
| Prøv Lofoten AS | Leknes | 2021 |
| Ps:Dans AS | Hamar | 2013 |
| Psi Assessment AS | Oslo | 2003 |
| Psykepleier AS | Risør | 2013 |
| Psykolog Kay Hjelle AS | Morvik | 2024 |
| Psykologia AS | Oslo | 2014 |
| Psykologitjenester AS | Vangsvik | 2017 |
| Psykt Deg AS | Farsund | 2020 |
| PT Gruppen Bergen AS | Bergen | 2015 |
| PT Hjem Kippernes AS | Averøy | 2023 |
| PT Hub AS | Oslo | 2022 |
| PT Huset AS | Bremnes | 2020 |
| PT Sentrene AS | Tromsø | 2015 |
| PT Studio WAY2ENDURANCE AS | Grimstad | 2021 |
| PT Tjenester AS | Drammen | 2017 |
| PT Vest AS | Knarrevik | 2025 |
| Pt-Coach Marit Endresen AS | Oslo | 2017 |
| Pt-Hege AS | Romedal | 2023 |
| Ptanette AS | Saksvik | 2017 |
| Ptdicte AS | Hauglandshella | 2020 |
| Ptpp AS | Vigrestad | 2021 |
| Ptstudio.No Avd. Arendal AS | Arendal | 2023 |
| Pukstad Formidling AS | Trondheim | 2025 |
| Puls Trafikkskole AS | Tromsø | 2018 |
| Pulslabben AS | Ålesund | 2024 |
| Pure Performance AS | Oslo | 2021 |
| Pure School AS | Oslo | 2016 |
| Purebliss AS | Drammen | 2023 |
| Purge Education AS | Oslo | 2025 |
| Puro Yoga AS | Oslo | 2005 |
| Puskhola Barnehage SA | Ålesund | 1990 |
| Pust Og Puls AS | Trondheim | 2022 |
| Pusteromet AS | Ulsteinvik | 2026 |
| Pusterommet Yoga Og Ayurveda Institutt AS | Mandal | 2016 |
| Pusteteknikk AS | Slependen | 2016 |