| Pohjanmaan Rakennus Ky | Construction | 2007 |
| Pohjanmaan Rauta Oy | Wholesale & retail | 1985 |
| Pohjanmaan Rta Oy | Real estate | 2023 |
| Pohjanmaan SA-Sähkö Electrics Ltd Oy | Construction | 1994 |
| Pohjanmaan Siivous Oy | Administrative & support | 2010 |
| Pohjanmaan Sisustus Oy | Construction | 2023 |
| Pohjanmaan Tasoite- ja Maalauspalvelu Oy | Construction | 1992 |
| Pohjanmaan Viemäripalvelu Oy | Water & waste | 2010 |
| Pohjanmaan ensiapukoulutus osk | Education | 2014 |
| Pohjanmaan toiminta Oy | Administrative & support | 2015 |
| Pohjanmaan viherrakennus Oy | Administrative & support | 2023 |
| Pohjoismainen Pelti Oy | Construction | 2011 |
| Pohjola katot Oy | Construction | 2010 |
| Pohjolan Konepesu Oy | Administrative & support | 2011 |
| Polairsoft Oy Ab | Professional & scientific | 2004 |
| Polar Light Technologies Ab | Manufacturing | 2026 |
| Polypac öppet bolag | Manufacturing | 1989 |
| Pontus Invest Ab | Professional & scientific | 2022 |
| PoroLegioona Ky | Information & communication | 2024 |
| Porotalo Oy | Professional & scientific | 2023 |
| Positiivinen Pulahdus Oy | Arts & recreation | 2026 |
| Postvera Oy | Financial services | 2017 |
| Powerheat Solutions Oy | Energy | 2022 |
| Premium Security avoin yhtiö | Administrative & support | 2011 |
| Presence Agency Oy | Professional & scientific | 2024 |
| Prestige Automotive Oy | Wholesale & retail | 2020 |
| Prestige Car Center Oy | Wholesale & retail | 2014 |
| Prestige Group Oy | Professional & scientific | 2019 |
| Prick & Fläck Ab | Financial services | 2021 |
| Primekoti Oy | Real estate | 2026 |
| Priska Autio Oy | Professional & scientific | 2020 |
| Privite Oy | Wholesale & retail | 2012 |
| ProID Solutions Oy | Professional & scientific | 2020 |
| ProLead Consulting Oy | Professional & scientific | 2009 |
| ProVision Consulting Avoin Yhtiö | Professional & scientific | 2010 |
| Proact Promotions Oy | Professional & scientific | 2024 |
| Profact Oy | Professional & scientific | 2010 |
| Profrec Oy | Administrative & support | 2007 |
| Prohoc Oy | Professional & scientific | 2021 |
| Projektila Oy | Real estate | 2023 |
| Prorak Oy | Construction | 2004 |
| Prospector Oy | Financial services | 2010 |
| Psykolog Cajsa-Stina Nabb Ab Oy | Health & social care | 2025 |
| Psykologia Passila Oy | Health & social care | 2018 |
| Psykologituki Pihlis Oy | Health & social care | 2022 |
| Pub Hutski Oy | Hospitality | 2023 |
| PublicNorth Advisory Oy | Professional & scientific | 2026 |
| Puddlehead Creations Oy | Information & communication | 2018 |
| Puheterapeuttisi Johanna Antila Oy | Health & social care | 2015 |
| Pukin Puhelin Oy | Information & communication | 2026 |
| Pukinkulman Tilitiimi Oy | Professional & scientific | 2019 |
| Pukuteollisuus Oy | Manufacturing | 2004 |
| Pumbala Oy | Construction | 2021 |
| Puna-Nokka Ky | Hospitality | 1985 |
| Putkiasennus M. Koivula Oy | Construction | 2009 |
| Puumedi Oy | Health & social care | 2020 |
| Puutarhurisi Johanna Vuorinen Oy | Administrative & support | 2021 |
| Puva Trade Oy | Wholesale & retail | 2025 |
| Pyöräliike Viertola Oy | Wholesale & retail | 2000 |
| Päivi Kristiina Kivelä Oy | Health & social care | 2018 |
| Päivi ja Christer Haapanen Ky | Wholesale & retail | 1981 |
| Pöllänen Sijoitus Ky | Financial services | 2006 |
| Pörtom Wind Farm Ab | Energy | 2020 |
| Q-Net Oy | Information & communication | 1994 |
| Quality Trans Vasa Ab Oy | Transport & logistics | 2016 |
| Quantum Invest Oy Ab | Real estate | 2015 |
| Quince Holding Oy | Financial services | 2019 |
| R & M Erkkilä Oy | Other services | 2017 |
| R-J Auto Oy Rinta-Jouppi | Wholesale & retail | 1983 |
| RA-Kiinteistöt, Vaasa Oy | Real estate | 2015 |
| RB Consult Ab | Administrative & support | 2015 |
| RB Works Ab | Administrative & support | 2026 |
| RE Ravintola Oy | Hospitality | 2025 |
| RLX Health & Wellness Oy | Wholesale & retail | 2010 |
| RLY NSTY Ab Oy | Wholesale & retail | 2023 |
| RMC-Service Oy | Construction | 2024 |
| RN-Solutions Oy | Construction | 2022 |
| RRK Capital Oy | Financial services | 2021 |
| RS Kiinteistösijoitus Oy | Real estate | 2022 |
| RS Koti Oy | Real estate | 2022 |
| RS-Kiinteistöhuolto Oy | Administrative & support | 2012 |
| RT Crypto Trading Öppet bolag | Financial services | 2018 |
| RTP Lehtinen Oy | Manufacturing | 2025 |
| RX-Kone Oy | Administrative & support | 2024 |
| RYNAmedia avoin yhtiö | Professional & scientific | 2013 |
| Ra-Ins Oy | Professional & scientific | 1996 |
| RaceCon Consulting Oy | Professional & scientific | 2017 |
| Radio-TV-Videohuolto Jaakko Laurila Ky | Other services | 1983 |
| Radiris Oy | Health & social care | 2016 |
| Rafinitec Oy | Administrative & support | 2018 |
| Rahkans Vattenandelslag | Water & waste | 2017 |
| Raimo Asikainen Oy | Construction | 2015 |
| Raimo Raitila Oy | Hospitality | 1999 |
| Rajakiiri Oy | Energy | 2007 |
| Rajalahti Enterprises Oy | Financial services | 2026 |
| Rakenne Bygg Vainio & Lundström Oy Ab | Construction | 1983 |
| Rakennus - Bygg SF Oy Ab | Construction | 2008 |
| Rakennus Mi & Re Oy | Construction | 1992 |
| Rakennus Oy MTM-Vaasa | Construction | 1994 |
| Rakennus Risto Hakala Oy | Construction | 2008 |