| Oy Extreme Fishing Finland Ltd | Administrative & support | 2015 |
| Oy Sunsec Ab | Professional & scientific | 1996 |
| Oy Texfield Ab | Wholesale & retail | 1991 |
| PETECH Oy | Construction | 2017 |
| PJT-Vakuutus Oy | Financial services | 2008 |
| PLaakso Oy | Hospitality | 2016 |
| PM Rakennuspalvelu Oy | Construction | 2014 |
| POLAR PARADISE Oy | Professional & scientific | 2021 |
| PR - Port Oy | Wholesale & retail | 1996 |
| PRO Consultation Finland Oy | Professional & scientific | 2021 |
| PRP-Capital Oy | Real estate | 2002 |
| PRP-Plastic Oy | Manufacturing | 2002 |
| Padamraj Oy | Hospitality | 2020 |
| Paikalliskustannus Alanko Ky | Information & communication | 1972 |
| Painstake Oy | Professional & scientific | 2024 |
| Palorak Oy | Construction | 2024 |
| Panel Pro Oy | Manufacturing | 1997 |
| Parlam Oy | Construction | 2020 |
| Parturiliike Mäkelä Oy | Other services | 2026 |
| Parviainen Heavy Oy | Construction | 2016 |
| Parviainen Invest Oy | Construction | 2005 |
| Pasi-Robot Oy | Professional & scientific | 2007 |
| Patepojat Oy | Information & communication | 2024 |
| Peltojärvi-yhtiöt Oy | Wholesale & retail | 2009 |
| PenkkiPepe Oy | Manufacturing | 2018 |
| Perhejuristit Närhi Oy | Professional & scientific | 2022 |
| PerusKatto Oy | Construction | 2021 |
| Perustava Infra Oy | Construction | 2021 |
| Perustava Paalutus Oy | Construction | 2019 |
| Petech Rakennuspalvelut Oy | Construction | 2023 |
| Pienryhmäkoti Tuikku Oy | Health & social care | 2009 |
| Pietalan asunnot Oy | Real estate | 2022 |
| Piiras Kartano Oy | Manufacturing | 1989 |
| Pinni & Ninni Oy | Wholesale & retail | 2016 |
| Pizzatime ravintolat Oy | Hospitality | 2025 |
| Playneer Oy | Information & communication | 2016 |
| Pohjanmaan Laki Ky | Wholesale & retail | 2006 |
| Pro-Center Oy | Wholesale & retail | 1992 |
| ProBrun Oy | Administrative & support | 2015 |
| ProFor Oy | Professional & scientific | 2018 |
| Provivo Oy | Manufacturing | 1993 |
| Psykologipalvelu Leino Oy | Health & social care | 2025 |
| Puheterapiapalvelu Mörsky Oy | Health & social care | 2023 |
| Purmotec Ky | Manufacturing | 2009 |
| Putkiliike Salovaara Oy | Construction | 2001 |
| Putkivisio Oy | Construction | 2009 |
| Pyhän Pojat Oy | Real estate | 2019 |
| Pyhänpilke Oy | Real estate | 2021 |
| Quadro Productions Oy | Information & communication | 2015 |
| RL53 Oy | Wholesale & retail | 1993 |
| Rudicon OY | Wholesale & retail | 2001 |
| RVO Asennus Oy | Agriculture & fishing | 2023 |
| Rak.tsto Cover Ky | Construction | 1996 |
| Rakennus Gasellit Oy | Real estate | 2022 |
| Rakennus J Hahl Ky | Construction | 2016 |
| Rakennus Jaaros Oy | Construction | 2005 |
| Rakennus Lestelin Oy | Construction | 2019 |
| Rakennus- ja remonttipalvelu Salminen oy | Construction | 2026 |
| RakennusTiki Oy | Construction | 2010 |
| Rakennusliike HOVI Oy | Construction | 2008 |
| Rakennusliike Kimmo Poutala Oy | Construction | 1999 |
| Rakennusliike Suvenkari Oy | Construction | 2018 |
| Rakennuspalvelu Meronen Oy | Real estate | 2019 |
| Rakennusurakointi Ismo Soininen Oy | Construction | 1994 |
| Rakvetas Oy | Construction | 1993 |
| Ramdos Oy | Construction | 1993 |
| Ramper Oy | Construction | 2014 |
| Ratka Oy | Construction | 2009 |
| Rautakuru Oy | Wholesale & retail | 2023 |
| Ravintola ja Juhlapalvelu Elle Ky | Hospitality | 1998 |
| Real-Steel Oy | Water & waste | 1987 |
| Recticel Insulation Oy | Manufacturing | 2017 |
| Rekola Oy Trolley Systems | Manufacturing | 2019 |
| Relaxum Oy | Health & social care | 2019 |
| Rengasmyynti Jari Kiviniemi Ky | Wholesale & retail | 1996 |
| Rengasmyynti Karvinen avoin yhtiö | Wholesale & retail | 2015 |
| Reotemet Oy | Construction | 1995 |
| Retail Leasing Oy | Administrative & support | 2012 |
| Retail Property Investment Oy | Real estate | 2014 |
| RieskaRainer Oy | Hospitality | 2019 |
| Rimaco Palvelut Oy | Construction | 2004 |
| Risto Haanketo Oy | Education | 2008 |
| Rondel Oy | Manufacturing | 1998 |
| Rosa Maja Oy | Hospitality | 2020 |
| Rosacity Oy | Wholesale & retail | 2011 |
| Rumex Oy | Construction | 2022 |
| Ruustinnan Kammari Oy | Hospitality | 2011 |
| Ruuvikauppa Oy Ålander | Wholesale & retail | 2003 |
| SB Rakennus Oy | Construction | 2011 |
| SCS Puhtaus Oy | Administrative & support | 1994 |
| SES Rakennus Oy | Construction | 2024 |
| SSV Consulting Oy | Financial services | 2008 |
| STR Group OY | Construction | 2012 |
| Saferoad Restraint Systems Oy | Wholesale & retail | 1993 |
| Sahlman Makeiset Oy | Manufacturing | 1986 |
| SaiRak Oy | Health & social care | 2014 |
| Saimaan Pihapuu Oy | Agriculture & fishing | 2020 |
| Sajotrans Oy | Transport & logistics | 2015 |
| Salaki Oy | Real estate | 2025 |
| Salasin Oy | Professional & scientific | 2022 |