| Pauli Lehtinen, Tampere Oy | Construction | 1996 |
| Pazzi Kangasala Oy | Hospitality | 2021 |
| PeTe Innovation Oy | Wholesale & retail | 2017 |
| PekVent Oy | Professional & scientific | 2016 |
| Pekka Heikkilä Oy | Financial services | 1988 |
| Pelikaani Tuotanto Ky | Construction | 2008 |
| Peliniemen vesiosuuskunta | Water & waste | 2006 |
| Pelti ja Rautarakenne Nurminen Ky | Manufacturing | 1982 |
| Pennimuori Oy | Professional & scientific | 2014 |
| Pennon Kaivin Oy | Construction | 2007 |
| Peregrino Oy | Transport & logistics | 2021 |
| Perenne Oy | Wholesale & retail | 2024 |
| Perkontil Oy | Professional & scientific | 1988 |
| Perula Oy | Agriculture & fishing | 2020 |
| Peruskari Oy | Real estate | 2014 |
| Pesue avoin yhtiö | Other services | 2017 |
| Peten Taksikiito Oy | Transport & logistics | 2015 |
| Petori Oy | Other services | 2013 |
| Phoenix Grids Oy | Construction | 2021 |
| Pihapalvelut Pirkanmaa oy | Construction | 2025 |
| Pihkafit Oy | Arts & recreation | 2020 |
| Pihla Häkkinen Oy | Arts & recreation | 2022 |
| Pikikolmio Oy | Construction | 1979 |
| Piko Invest Oy | Professional & scientific | 2024 |
| Pikohuolto Oy | Other services | 2024 |
| Pikonlinnan Autohuolto Oy | Other services | 2023 |
| Pilates Place Tampere Oy | Health & social care | 2005 |
| Pineware Oy | Information & communication | 2021 |
| Pinkimex Oy | Real estate | 1989 |
| Pinnin Suometar Oy | Financial services | 2015 |
| Pintora Oy | Construction | 2021 |
| Pirkan Kiinteistöhallinta Avoin yhtiö | Real estate | 1996 |
| Pirkan Tekano Oy | Manufacturing | 1998 |
| Pirkanmaan Erikoislääkäripalvelu Oy | Health & social care | 1989 |
| Pirkanmaan Hukkalämpö Oy | Construction | 2016 |
| Pirkanmaan Infra Oy | Construction | 2020 |
| Pirkanmaan Juhlapalvelut Oy | Hospitality | 2015 |
| Pirkanmaan Laatuisännöinti Oy | Real estate | 2012 |
| Pirkanmaan Laatuputki Oy | Construction | 2018 |
| Pirkanmaan Lattialämpö Oy | Construction | 2020 |
| Pirkanmaan Lukkopalvelu Oy | Wholesale & retail | 2017 |
| Pirkanmaan MPJ Palvelut Oy | Construction | 2019 |
| Pirkanmaan Maanrakennus Oy | Construction | 2017 |
| Pirkanmaan Mestaripalvelu Oy | Professional & scientific | 2021 |
| Pirkanmaan Puistonvartija Oy | Construction | 2024 |
| Pirkanmaan Puumak Oy | Construction | 1996 |
| Pirkanmaan Radio- ja Oftalmologia Oy | Health & social care | 2009 |
| Pirkanmaan Rakennustaito Oy | Construction | 2009 |
| Pirkanmaan Sähkötyö Oy | Construction | 1996 |
| Pirkanmaan Tasorakentajat Oy | Construction | 1990 |
| Pirkanmaan Timpuriyksikkö Oy | Construction | 2019 |
| Pirkanmaan autotalo Oy | Wholesale & retail | 2024 |
| Pirkanmaan rakennuttamis- ja valvontapalvelu Oy | Real estate | 2016 |
| Pirkanmaan taksikuljetus Oy | Transport & logistics | 2024 |
| Pirkkaoffset Oy | Manufacturing | 1995 |
| Pispa Consult & Invest Oy | Professional & scientific | 2015 |
| Pitopalvelu Irma Mäkimaa Oy | Hospitality | 1997 |
| Piviqus Oy | Information & communication | 1996 |
| Pizzeria Kalimero Oy | Hospitality | 2003 |
| Pkt Invest Oy | Real estate | 2026 |
| Polar Talotekniikka Oy | Construction | 2009 |
| Ponsa Services Oy | Professional & scientific | 2021 |
| Poppamies Oy | Wholesale & retail | 2008 |
| Porkkana Ryhmä Oy | Information & communication | 1991 |
| Power One Energy Engineering Oy | Professional & scientific | 2017 |
| PowerWeld Oy | Manufacturing | 2014 |
| Pravia Oy | Financial services | 2008 |
| Prima Halonen Oy | Other services | 2025 |
| ProSarPe Oy | Professional & scientific | 2025 |
| ProToni Oy | Arts & recreation | 2021 |
| Profigrid Oy | Professional & scientific | 2021 |
| Proinfra Oy | Construction | 2010 |
| Project 42 Oy | Professional & scientific | 2019 |
| Provesan Oy | Professional & scientific | 2011 |
| Prurak Oy | Construction | 2022 |
| Prusin Rakennuspalvelu Oy | Construction | 1995 |
| Pumpulinna Oy | Wholesale & retail | 2025 |
| Puristeteos Oy | Manufacturing | 1985 |
| Purple Flow Oy | Professional & scientific | 2016 |
| Puu yhtiö Oy | Professional & scientific | 2023 |
| Pyynikin Karkki Oy | Professional & scientific | 2026 |
| Pyynikin Kiinteistötoimisto Oy | Administrative & support | 1995 |
| Pyynikin Paroni Oy | Professional & scientific | 2026 |
| Päijänteen Tilausristeilyt Oy | Transport & logistics | 2024 |
| Pääskyniemen Höyläämö Oy | Manufacturing | 2006 |
| Pöllimies Oy | Agriculture & fishing | 2022 |
| Quidea Oy | Professional & scientific | 1990 |
| R-Menu Oy | Manufacturing | 1991 |
| Rakka Creative OY | Professional & scientific | 2015 |
| Raksis OY | Construction | 2002 |
| RD-Rakennuspalvelu Oy | Construction | 2011 |
| RK-Line Oy | Transport & logistics | 2014 |
| RKH Raskaan Kaluston Huolto Oy | Other services | 1987 |
| RL Asunnot Oy | Real estate | 2021 |
| RS-moniapu Oy | Other services | 2018 |
| RS-tukku Oy | Wholesale & retail | 2017 |
| RT Green Holding Oy | Financial services | 2024 |
| RV Hallinto Oy | Administrative & support | 2017 |
| Raide Media Oy | Professional & scientific | 2024 |
| Railweld Oy | Manufacturing | 2022 |