| Pia Vilanen Oy | Professional & scientific | 2026 |
| Pico Alto Oy | Wholesale & retail | 1998 |
| Pihapirkot Ky | Administrative & support | 2010 |
| Pihastamo Oy | Construction | 2018 |
| Pikasauma Oy | Manufacturing | 1977 |
| Pikkupiika Satu Oy | Administrative & support | 2022 |
| Pile Consulting Oy | Professional & scientific | 2026 |
| Pilkerinki Oy | Construction | 1985 |
| Pinduura Oy | Wholesale & retail | 2002 |
| Pink Flow Consulting Oy | Education | 1997 |
| Pinvest Oy | Administrative & support | 2022 |
| Pipu Ky | Manufacturing | 1985 |
| Pirinen Consulting Oy | Professional & scientific | 2023 |
| Pirkan Kasööri Oy | Financial services | 1987 |
| Pirkan Kuljetus Oy | Transport & logistics | 1971 |
| Pirkan Pinnoitus Oy | Construction | 1988 |
| Pirkan Ympäristöpalvelut Oy | Administrative & support | 2010 |
| Pirkanmaan Carservice Oy | Other services | 2021 |
| Pirkanmaan Isännöintipalvelu Oy | Administrative & support | 2007 |
| Pirkanmaan Jäätelö Oy | Wholesale & retail | 2015 |
| Pirkanmaan Kattohuolto Oy | Construction | 2014 |
| Pirkanmaan Kompensointi Oy | Manufacturing | 2026 |
| Pirkanmaan Kylmälaitehuolto Oy | Other services | 2011 |
| Pirkanmaan Laattatiimi Oy | Construction | 2025 |
| Pirkanmaan Laatuhuolto Oy | Water & waste | 2020 |
| Pirkanmaan Laatutoimitus Oy | Construction | 2005 |
| Pirkanmaan Laatutyö Oy | Construction | 1996 |
| Pirkanmaan Liikenneopettajat Oy | Education | 2008 |
| Pirkanmaan Liikenneopisto Oy | Education | 1995 |
| Pirkanmaan Metallitekniikka Oy | Manufacturing | 2012 |
| Pirkanmaan Monirakenne Oy | Construction | 2021 |
| Pirkanmaan Pesupalvelut Oy | Administrative & support | 2015 |
| Pirkanmaan Pienrakentajat Oy | Construction | 2006 |
| Pirkanmaan Pohjarakennus Oy | Construction | 2021 |
| Pirkanmaan Pro Investment Oy | Real estate | 2015 |
| Pirkanmaan Putkimies Oy | Construction | 2017 |
| Pirkanmaan Rakennearviointi Oy | Professional & scientific | 2003 |
| Pirkanmaan Rakennuspalvelu Oy | Construction | 2019 |
| Pirkanmaan Rakennustuotanto Oy | Construction | 2021 |
| Pirkanmaan SH Saneeraustiimi Oy | Construction | 2026 |
| Pirkanmaan Sisätaitajat Oy | Construction | 2016 |
| Pirkanmaan Taksipalvelu Oy | Transport & logistics | 2009 |
| Pirkanmaan Tanssiopisto Elina Berg Oy | Education | 2016 |
| Pirkanmaan Toimitilasiivous Oy | Administrative & support | 2012 |
| Pirkanmaan kaasutekniikka Oy | Construction | 2010 |
| Pisa Kattoremontti Oy Pirkanmaa | Construction | 2024 |
| Pitkäjärvi Media Oy | Information & communication | 2007 |
| Pj Monityö Oy | Construction | 2014 |
| PlanPro Oy | Construction | 2011 |
| Plantaasi Oy | Agriculture & fishing | 1985 |
| Platinum Pet Oy | Agriculture & fishing | 2010 |
| Player One Oy | Wholesale & retail | 1998 |
| Pohjanmaan Autokeskus Oy | Real estate | 2015 |
| Pohjola Logistics Oy | Transport & logistics | 2013 |
| Pondia Oy | Professional & scientific | 2024 |
| Portrans Trucking Oy | Other services | 1999 |
| Prepagato Oy | Real estate | 1994 |
| Prestige Nutrition Oy | Manufacturing | 2025 |
| Pretty Okay Apps Oy | Information & communication | 2024 |
| Prevector Oy | Professional & scientific | 2016 |
| Preventas Oy | Administrative & support | 2024 |
| Prime Classics Oy | Other services | 2009 |
| Primea Systems Oy | Information & communication | 2007 |
| Pro Nordic Care Oy | Administrative & support | 2022 |
| Pro Parts Finland Oy | Wholesale & retail | 2018 |
| Pro-Fix Tampere Oy | Other services | 2009 |
| ProLine Charter Oy | Transport & logistics | 2019 |
| Procella Events Oy | Arts & recreation | 2021 |
| Procella Solutions Oy | Professional & scientific | 2019 |
| Projektirakentajat Ojalehto Oy | Construction | 1991 |
| Prokorak Oy | Construction | 2010 |
| Protask Oy | Professional & scientific | 2025 |
| Psykoterapia Suominen Oy | Health & social care | 2021 |
| Psykoterapia ja Työnohjaus Notkelma Oy | Health & social care | 2025 |
| Puhdas Tunne Oy | Administrative & support | 2023 |
| Puhdistamo - Real Foods Oy | Wholesale & retail | 2010 |
| Puhekeskus Lausua Oy | Professional & scientific | 2015 |
| Puheterapia Papupata Oy | Health & social care | 2018 |
| Puisto Live Oy | Professional & scientific | 2021 |
| Purmaconsulting OY | Professional & scientific | 2013 |
| PuroSoft Oy | Information & communication | 2025 |
| PutkiKa Oy | Construction | 2022 |
| Putkialan Remonttipalvelu Oy | Construction | 2018 |
| Putkiasennus PRP Oy | Construction | 2006 |
| Putkiasennus TJT Oy | Construction | 2019 |
| Putkiliike P. Nuora Oy | Construction | 1979 |
| Putkityö Jaakkola Oy | Construction | 2013 |
| Puusirkku Oy | Construction | 2021 |
| Puustinen Logistics Oy | Transport & logistics | 2024 |
| Puutiili Oy | Manufacturing | 2026 |
| Puutyö Ruokonen Oy | Manufacturing | 2019 |
| Pyrollpack Oy | Manufacturing | 1968 |
| Pysy Liikkees Group Oy | Arts & recreation | 2016 |
| QTec Engineering Oy | Wholesale & retail | 2011 |
| Quantum Motoris Oy | Wholesale & retail | 2007 |
| R. Kujanen Oy | Professional & scientific | 2023 |
| R/J Raekangas Oy | Administrative & support | 2024 |
| REMONDIS Maintenance & Services Finland Oy | Professional & scientific | 2013 |
| Remontti- Ja Lvi-Palvelu Jyrki Rantanen OY | Construction | 2009 |
| Rextar OY | Construction | 2015 |