| Pedersen Service & Eiendomsdrift AS | Real estate | 2019 |
| Performance Kampsportsenter AS | Education | 2020 |
| Pertold Holding AS | Wholesale & retail | 2022 |
| Petrine Forlag Bjørløw Og Line Ans | Information & communication | 1999 |
| Pets Stoa AS | Wholesale & retail | 2019 |
| Petter Aaland AS | Real estate | 2019 |
| Pettersen Holding & Invest AS | Construction | 2023 |
| Pharmamentor AS | Professional & scientific | 2015 |
| Piervision AS | Professional & scientific | 2020 |
| Pilestredet 30 a Og B AS | Real estate | 2014 |
| Pitron Eiendom AS | Real estate | 2014 |
| Pitstop Trafikkskole AS | Education | 2012 |
| Pizzakokken Da | Manufacturing | 1995 |
| Planet Lovers AS | Information & communication | 2025 |
| Plasencia-Pedersen AS | Professional & scientific | 2024 |
| PLD Holding AS | Construction | 2022 |
| PM Elektro AS | Construction | 2021 |
| PM Grafisk Sør AS | Manufacturing | 2013 |
| PM Teknologi Sør AS | Information & communication | 2000 |
| PM Tjenestesenter AS | Information & communication | 1988 |
| Pm-Eiendom AS | Real estate | 2025 |
| Pm-Invest AS | | 2025 |
| Poiesz Holding AS | Hospitality | 2011 |
| Poiesz Restaurant AS | Hospitality | 2011 |
| Polaris Distribusjon Sør AS | Transport & logistics | 1998 |
| Polaris Media Sør AS | Information & communication | 2013 |
| Polaris Trykk Arendal AS | Manufacturing | 1996 |
| Pollen AS | Real estate | 1996 |
| Pollen Bygg & Eiendom AS | Professional & scientific | 2024 |
| Pollen Fysioterapi Da | Health & social care | 2020 |
| Pollen Hud Og Spa AS | Other services | 2008 |
| Portalen Arendal AS | Hospitality | 2004 |
| Power Flyttebyrå AS | Transport & logistics | 2022 |
| Power Remap AS | Other services | 2021 |
| Prema Eiendom AS | Real estate | 2008 |
| Prema Sprøyteservice AS | Construction | 2020 |
| Premiesentralen AS | Wholesale & retail | 2014 |
| Prestvik Holding AS | Wholesale & retail | 2025 |
| Printing House AS | Manufacturing | 1991 |
| Pro Billakkering AS | Other services | 2010 |
| Pro-Mare AS | Wholesale & retail | 2017 |
| Professional Cuts Barber AS | Other services | 2019 |
| Professional Fittings AS | Manufacturing | 2008 |
| Profil & Markedsføring Svein Roar Gunnufsen Og Inge Eugen Ellingsen Ans | Professional & scientific | 1987 |
| Property 1 AS | Real estate | 2021 |
| Prosjektus AS | Professional & scientific | 2025 |
| Prosjektutvikling AS | Real estate | 1985 |
| Prospera Eiendom AS | Real estate | 2025 |
| Psykiater Einar Formo Hermansen AS | Health & social care | 2026 |
| Psykiater Philip Nissen AS | Health & social care | 2026 |
| Psykolog Inger Liv Buflaten AS | Health & social care | 2018 |
| Psykologlenja AS | Health & social care | 2023 |
| Ptstudio.No Avd. Arendal AS | Education | 2023 |
| Puerto De Mogan AS | Real estate | 2008 |
| Pynten 19 AS | Health & social care | 2014 |
| Pål Sundby Invest AS | Financial services | 2014 |
| Påskedagsheia Bolig AS | Real estate | 2020 |
| Q2 Arkitekter AS | Professional & scientific | 2006 |
| Q3 Partners AS | Information & communication | 2017 |
| Qorban Stein Solid AS | Construction | 2020 |
| Qumea | Health & social care | 2020 |
| R Christensen Holding AS | Financial services | 2005 |
| R.T Holding AS | | 2019 |
| Radio- Og Tv-Teknikk AS | Wholesale & retail | 2005 |
| Raman Frisør AS | Other services | 2017 |
| Ramo Invest AS | Real estate | 2024 |
| Randi Lauvdal AS | Wholesale & retail | 2022 |
| Random Design Da | Professional & scientific | 2002 |
| Rannekleiv & Fjærbu AS | Construction | 2022 |
| Rasmussen Engros AS | Wholesale & retail | 1996 |
| Ravnberget Utbygging AS | Real estate | 2020 |
| RBJ Invest AS | | 2019 |
| RDH Utvikling AS | Real estate | 2013 |
| Rec Solar Holdings AS | Energy | 2007 |
| Redcord AS | Manufacturing | 1990 |
| Refsnes Invest AS | | 2025 |
| Refsor AS | Health & social care | 2015 |
| Reggie and Sophie Da | Other services | 2009 |
| Regnskapene AS | Professional & scientific | 2014 |
| Regnskapspilotene Invest AS | Professional & scientific | 2022 |
| Regnskapstjenester AS | Professional & scientific | 1996 |
| Regnskapstjenester Sør SA | Professional & scientific | 1954 |
| Reidars Trafikkskole AS | Education | 2016 |
| Reinum Trading AS | Wholesale & retail | 1991 |
| Ren Ventilasjon AS | Construction | 2016 |
| Renovum AS | Information & communication | 2025 |
| Reptile Design Ans | Information & communication | 1996 |
| Resettle AS | Professional & scientific | 2024 |
| Restorfx Aust Agder AS | Other services | 2019 |
| Ria Group AS | Agriculture & fishing | 2015 |
| Richard Andersen Elektro AS | Construction | 1982 |
| Ring Bil Arendal AS | Wholesale & retail | 2019 |
| Ristøl Maskinutleie Og Entreprenør AS | Administrative & support | 2022 |
| Ritz AS | Real estate | 1963 |
| RMF Invest AS | Wholesale & retail | 2005 |
| Robust Eiendom AS | Real estate | 2014 |
| Rokade Industrier Da | Construction | 2003 |
| Rokk AS | Real estate | 2011 |
| Romnes Arendal AS | Wholesale & retail | 2015 |
| Romstølen Park 2 AS | Real estate | 2018 |