| Pitkäkoski yhtiöt Oy | Real estate | 2022 |
| Pitkänokka Oy | Agriculture & fishing | 2017 |
| Pitoemännät Ky | Professional & scientific | 1979 |
| Pitsa&Kakku Ravintolat Oy | Hospitality | 2020 |
| Planico Rakennetekniikka Oy | Professional & scientific | 2022 |
| Plune Oy | Administrative & support | 2015 |
| Plune Yhtiöt Oy | Real estate | 2017 |
| Pneuplan Oy | Manufacturing | 2002 |
| Pneuto Oy | Manufacturing | 1996 |
| Polar Solutions Ltd Oy | Wholesale & retail | 2023 |
| Porin Lentopalvelu Oy | Administrative & support | 2025 |
| Portinporsas Oy | Agriculture & fishing | 2009 |
| Power Rock Oy | Real estate | 2013 |
| Power User Oy | Information & communication | 2022 |
| Pransi Konekorjaamo Oy | Other services | 2022 |
| Prihtin Talo Oy | Agriculture & fishing | 2009 |
| Prime Event Oy | Professional & scientific | 2016 |
| Prime Foods Oy | Wholesale & retail | 2023 |
| Privas Oy | Real estate | 1992 |
| Psykologipalvelu Peilikuva Oy | Health & social care | 2015 |
| Psykologitoimisto Leea Kuusela Ky | Health & social care | 2006 |
| Puistokadun Kukkatupa Oy | Wholesale & retail | 2010 |
| Pulmikka Oy | Mining & quarrying | 2007 |
| Puonti Rebuk Oy | Hospitality | 2019 |
| Purple Snow IT Oy | Information & communication | 2023 |
| Putajan kiinteistöt Oy | Construction | 2002 |
| Putiikki Torikeskus Ky | Wholesale & retail | 1990 |
| Putki-Petteri Oy | Construction | 2000 |
| Putkikalustajat Oy | Construction | 2023 |
| Putkiliike H. Vuorinen Ky | Construction | 1972 |
| Putkinieminen Oy | Construction | 2016 |
| PuuKärppä Ky | Manufacturing | 2019 |
| Puunsyy Oy | Construction | 2026 |
| Puusepäntehdas Isto Ylijoki Kommandiittiyhtiö | | 1973 |
| Puusepäntyö Mielikaluste Ky | Construction | 2003 |
| Puutuote Veikko Kiili Ky | Manufacturing | 1990 |
| Puutyö Ilkka Ala-Venetmäki Ky | Manufacturing | 1984 |
| Pyymäen Leipomo Oy | Manufacturing | 1986 |
| Pyymäen kahvilat Oy | Hospitality | 2023 |
| Pölypeikot Oy | Administrative & support | 2019 |
| QW Kwist Oy | Financial services | 2005 |
| R. Pohjanheimo Ky | | 1977 |
| Rakennusurakointi Rauno Salo OY | Professional & scientific | 2002 |
| RAPPAUS JA MAALAUSTYÖ MÄNTYLÄ Avoin yhtiö | Construction | 2011 |
| Rauros OY | Manufacturing | 2005 |
| Ripsminn OY | Other services | 2023 |
| RKS Sirepa Oy | Transport & logistics | 1993 |
| RM Metalli ja Asennus Oy | Manufacturing | 2008 |
| RR Bridgeworks Oy | Professional & scientific | 2025 |
| RV-Yhtiö Oy | Manufacturing | 1997 |
| RaPa Talot Oy | Construction | 2020 |
| Raceman Oy | Other services | 2007 |
| Rahakatti Oy | Professional & scientific | 1993 |
| Rahareikä Oy | Financial services | 1986 |
| Raharysä Oy | Financial services | 1989 |
| Raikusen-ajot Oy | Transport & logistics | 2025 |
| Railin Toimikas Ky | Manufacturing | 2010 |
| Railtech Oy | Construction | 2023 |
| RakenneVarikko Oy | Manufacturing | 2024 |
| Rakennepalvelu Pekka Miettinen Oy | Professional & scientific | 2021 |
| Rakennus Blom Oy | Construction | 2022 |
| Rakennus Kannisto Oy | Construction | 2015 |
| Rakennus M. Lehto Oy | Construction | 2002 |
| Rakennus Tirkkonen Oy | Construction | 2016 |
| Rakennusliike Minkkinen & Ketola Oy | Construction | 1987 |
| Rakennusliike Veli-Matti Selin Oy | Construction | 2007 |
| Rakennuspalvelu Ari Hongisto Oy | Construction | 2019 |
| Rakennuspalvelu Juha Ketola Oy | Construction | 2009 |
| Rakennuspalvelu PETE Oy | Construction | 2021 |
| Rakennuspalvelu Risto Kangasmaa Ky | Construction | 2007 |
| Rakennustyö Hituri Avoin yhtiö | Construction | 2011 |
| Rakennustyö Joki Oy | Construction | 2021 |
| Rakennustyö Salo Ky | Construction | 2011 |
| Rakennusurakointi Pietilä Oy | Construction | 2017 |
| Rakennusurakointi T. Myllymäki Oy | Construction | 1987 |
| Rakentajan Palvelu Oy Reponen | Construction | 1989 |
| Rakentajapalvelu Reijo Toivonen Ky | Professional & scientific | 1983 |
| Raksapal oy | Construction | 2019 |
| Rantala Consulting Oy | Health & social care | 2006 |
| Rantel Oy | Professional & scientific | 2013 |
| Raskashuolto Taipale Oy | Other services | 2026 |
| RauTur Oy | Real estate | 2019 |
| Raudan Polte Oy | Arts & recreation | 2015 |
| RautaRasti Oy | Wholesale & retail | 2010 |
| Rauva-Invest Oy | Real estate | 2013 |
| Ravintola Marleena avoin yhtiö | | 1990 |
| Ravintola Nuupalan Patruuna Oy | Hospitality | 2007 |
| ReMaPo Oy | Construction | 2011 |
| Rehakka Service Oy | Wholesale & retail | 2024 |
| Reimari Holding Oy | Financial services | 2012 |
| Reiraamo Oy | Manufacturing | 2026 |
| Rem-Pro Oy | Professional & scientific | 2025 |
| Rembba Oy | Construction | 2025 |
| RengasGroup Oy | Wholesale & retail | 2020 |
| Renotel Oy | Construction | 2024 |
| RentLex Oy | Real estate | 2025 |
| RestaSasta Oy | Hospitality | 2020 |
| Riemu Design Oy | Professional & scientific | 2022 |
| RigFix Oy | Other services | 2025 |
| Riga Wood Finland Oy | Wholesale & retail | 2004 |