| Piketa Oy | Other services | 1993 |
| Pikisilmä Oy | Construction | 1993 |
| Pikku Onnenlanttinen Oy | Hospitality | 2023 |
| Pikkupapu Coffee Cart Oy | Hospitality | 2000 |
| Pikkupursi Oy | Education | 2015 |
| Pilkington Autoglass Oy | Manufacturing | 2020 |
| Pilkington Automotive Finland Oy | Manufacturing | 1962 |
| Pilotar Oy | Financial services | 2012 |
| PilvIT Oy | Information & communication | 2020 |
| Pilvipalvelu Ky | Information & communication | 2012 |
| Pilvitel Oy | Information & communication | 2026 |
| Pin Design Oy | Manufacturing | 2021 |
| Pin Hair Oy | Other services | 2020 |
| Pinball Union osk | Arts & recreation | 2020 |
| Pine & Moss Oy | Arts & recreation | 2025 |
| Pineal G Vitality Oy | Real estate | 2011 |
| Pinemedi Oy | Health & social care | 2022 |
| Piner Oy | Hospitality | 2017 |
| Pinja Sivonen Oy | Financial services | 2021 |
| Pink Lemon Finland Oy | Professional & scientific | 2013 |
| Pink Note Oy | Health & social care | 2023 |
| Pinna Tiimi avoin yhtiö | Arts & recreation | 2015 |
| Pinnoitus JP OY | Construction | 2020 |
| Pinocode Oy | Information & communication | 2018 |
| Pinovuo Oy | Information & communication | 2018 |
| Pinoy Express Oy | Hospitality | 2025 |
| Pinsto Oy | Construction | 2022 |
| Pinstreet Music Oy | Real estate | 2014 |
| PintaVille Oy | Construction | 2022 |
| Pintanen Oy | Construction | 2025 |
| Piolem Oy | Financial services | 2026 |
| Pioneeri Media Works Oy | Information & communication | 2024 |
| Pioneeri Production Oy | Information & communication | 2013 |
| Pioni Kotisiivous Oy | Administrative & support | 2021 |
| Pipa Consulting Oy | Financial services | 2019 |
| Pipe Insulation Finland Oy | Construction | 2021 |
| PirCom Oy | Construction | 2013 |
| Pirates & Unicorns Oy | Hospitality | 2019 |
| Pircomp Oy | Financial services | 2011 |
| Pirhonen Consulting Oy | Professional & scientific | 2012 |
| Pirkan Energiatodistukset Oy | Professional & scientific | 1992 |
| Pirkan Kattotek Oy | Construction | 2026 |
| Pirkan Kello Oy | Wholesale & retail | 2019 |
| Pirkan Kiinteistöala Oy | Real estate | 1988 |
| Pirkan Kovakromaus Oy | Manufacturing | 1989 |
| Pirkan LVI-Eristys Oy | Construction | 2010 |
| Pirkan Laatusähkö Oy | Construction | 2010 |
| Pirkan MS-Kojeisto Oy | Wholesale & retail | 2005 |
| Pirkan Maja OY | Professional & scientific | 1983 |
| Pirkan Market Oy | Wholesale & retail | 2018 |
| Pirkan Opiskelija-asunnot Oy | Real estate | 1966 |
| Pirkan Putkikeräys Oy | Water & waste | 2010 |
| Pirkan Rent Oy | Administrative & support | 2013 |
| Pirkan Saneeraus Oy | Construction | 1994 |
| Pirkan Sähkö-Konekeskus Ky | Wholesale & retail | 1971 |
| Pirkan Sähköurakointi Oy | Construction | 2025 |
| Pirkan Säle Oy | Wholesale & retail | 2021 |
| Pirkan Taksi Oy | Transport & logistics | 2025 |
| Pirkan Tilipalvelu Oy | Professional & scientific | 2002 |
| Pirkan Tilitoimisto Oy | Professional & scientific | 1990 |
| Pirkanmaan Ajoneuvohuolto Oy | Other services | 2015 |
| Pirkanmaan Akkupalvelu Oy | Wholesale & retail | 2003 |
| Pirkanmaan Ammatti-Isännöinti Oy | Real estate | 1987 |
| Pirkanmaan Asuntopalvelu Ky | Real estate | 1988 |
| Pirkanmaan Asuntovälittäjät Oy | Real estate | 2013 |
| Pirkanmaan Autotaito Oy | Other services | 1994 |
| Pirkanmaan Autovälitys Oy | Wholesale & retail | 2022 |
| Pirkanmaan Avo-Asunnot Oy | Real estate | 2002 |
| Pirkanmaan Avo-Rakennuttajat Oy | Construction | 2002 |
| Pirkanmaan Boxi Oy | Construction | 2002 |
| Pirkanmaan Duo siivouspalvelut Oy | Administrative & support | 2011 |
| Pirkanmaan Ekopuu avoin yhtiö | Wholesale & retail | 1996 |
| Pirkanmaan Energiafiksu Oy | Construction | 2025 |
| Pirkanmaan Ensikoti Oy | Health & social care | 2025 |
| Pirkanmaan Esitystekniikka Oy | Arts & recreation | 2004 |
| Pirkanmaan Finanssi Oy | Professional & scientific | 1990 |
| Pirkanmaan Hammaslääkäriasema Oy | Health & social care | 1983 |
| Pirkanmaan Hammaspalvelu Oy | Real estate | 1988 |
| Pirkanmaan Ilmastointipuhdistus Oy | Construction | 2003 |
| Pirkanmaan J.J. Laatoitus Oy | Construction | 2018 |
| Pirkanmaan Jätehuolto Oy | Water & waste | 1994 |
| Pirkanmaan Kiinteistö- ja Sisäilmatutkimus Oy | Professional & scientific | 2011 |
| Pirkanmaan Kiinteistöasiantuntijat Oy | Professional & scientific | 2024 |
| Pirkanmaan Kipsivalu Oy | Construction | 2016 |
| Pirkanmaan Konttorikone Oy | Wholesale & retail | 1989 |
| Pirkanmaan Kotihuolto Oy | Administrative & support | 2015 |
| Pirkanmaan Laatumaalarit Oy | Construction | 2020 |
| Pirkanmaan Laatuvälitys Oy | Professional & scientific | 2012 |
| Pirkanmaan Laserleikkaus Oy | Manufacturing | 2020 |
| Pirkanmaan Levytyö Oy | Manufacturing | 2002 |
| Pirkanmaan Louhintakonsultit Oy | Professional & scientific | 2024 |
| Pirkanmaan Lounaskahvilat Oy | Hospitality | 1999 |
| Pirkanmaan Marjatarhat Oy | Wholesale & retail | 2024 |
| Pirkanmaan Messut Oy | Administrative & support | 2026 |
| Pirkanmaan Mestari-Rakentajat Oy | Construction | 2005 |
| Pirkanmaan Mestarisepät Oy | Construction | 2022 |
| Pirkanmaan Mestaritimpuri Oy | Real estate | 2021 |
| Pirkanmaan NR-Rakenne Oy | Professional & scientific | 2011 |
| Pirkanmaan Nahkakuviointi Ky | Manufacturing | 1968 |
| Pirkanmaan Nostinpalvelu Oy | Administrative & support | 2025 |