| Oy Trans Ingman Ab | Transport & logistics | 2001 |
| Oy Trans Sandås Ab | Transport & logistics | 1988 |
| Oy Tratax Ab | Construction | 1988 |
| Oy Treetail Ab | Administrative & support | 2022 |
| Oy Vaasa Ekopress Ab | Professional & scientific | 1996 |
| Oy Vaasa Factoring Ab | Professional & scientific | 2015 |
| Oy Vaasan Berylli Ab | Real estate | 2010 |
| Oy Vallonia Ab | Hospitality | 1976 |
| Oy Vedaris Ab | Real estate | 2001 |
| Oy Wasa Citybus Ab | Transport & logistics | 2025 |
| Oy Wiik & Ström Ab | Transport & logistics | 2011 |
| Oy Östmans Net Ab | Professional & scientific | 1985 |
| P Eckerman Invest Oy Ab | Professional & scientific | 2022 |
| PSR asennus Oy | Construction | 2015 |
| PW Invest Ab | Financial services | 2011 |
| Paula ja Peter Svahn Oy | Wholesale & retail | 1999 |
| Pe-Doit Ab Oy | Agriculture & fishing | 2008 |
| Peltisepänliike Niemelä Oy | Construction | 2021 |
| Piece of Shape Ab | Construction | 2015 |
| Pix Properties Ab Oy | Real estate | 2022 |
| Polttoväri Oy | Manufacturing | 2012 |
| Pompelmo Global Oy | Professional & scientific | 2026 |
| Prestige Garden Clean Oy Ab | Administrative & support | 2024 |
| Primica Oy | Wholesale & retail | 1998 |
| Pro Motor Center Oy | Wholesale & retail | 2024 |
| ProfiMentor Oy | Professional & scientific | 2022 |
| Psykolog Holm Ab | Health & social care | 2019 |
| Punati Oy | Wholesale & retail | 1998 |
| Putkityö P. Kontturi Oy | Construction | 2017 |
| Puunaamo Works Oy | Other services | 2026 |
| Pyretrin Finland Ab | Administrative & support | 2024 |
| Päärynä Kike Oy | Professional & scientific | 2026 |
| Pöpö Oy | Wholesale & retail | 2021 |
| Qapita Oy | Financial services | 2022 |
| RH-Trans Oy Ltd | Transport & logistics | 2010 |
| Raimo Horttana Ky | Construction | 1985 |
| Rami J Niemelä oy | Hospitality | 2019 |
| Renergy Elements Ab | Energy | 2021 |
| Renergy Nordic Ab | Energy | 2021 |
| Rent It Wasa Ab | Administrative & support | 2021 |
| Ricomix Oy | Manufacturing | 1994 |
| Riitan Herkku Oy | Manufacturing | 1987 |
| Ropina Oy | Construction | 1996 |
| Rämik Ab | Manufacturing | 1980 |
| SF Seniorivuokraus Osk | Administrative & support | 2012 |
| SSC Fleet Ab | Manufacturing | 2023 |
| SUPERSTARK GYM öppet bolag | Arts & recreation | 2016 |
| Saikkonen Holding Oy | Financial services | 2025 |
| Sanna ja Marko Löija Oy | Wholesale & retail | 2000 |
| ScalePoint Ventures Oy | Professional & scientific | 2026 |
| Scandinavian Entreprenad Oy | Mining & quarrying | 2024 |
| Sesamway avoin yhtiö | Wholesale & retail | 2003 |
| Shanshan New Material (Finland) Oy | Manufacturing | 2024 |
| Silver Kodit Oy | Other services | 2020 |
| Sjö Consulting Oy | Wholesale & retail | 2025 |
| Sleep Store Oy Ab | Wholesale & retail | 2020 |
| Smedin öppet bolag | Hospitality | 2014 |
| Space 1 Ab | Real estate | 2022 |
| Stando-Car Oy | Wholesale & retail | 2006 |
| Starsview Oy | Information & communication | 2023 |
| Sudarat Consulting Oy | Administrative & support | 2019 |
| Suomen Peltikate Oy | Manufacturing | 2021 |
| Söderbyn Invest Ab | Financial services | 2024 |
| T. Ahlbäck Oy Ab | Construction | 2019 |
| TB K Hietanen ky | Wholesale & retail | 1999 |
| TEP Roof Pohjanmaa Oy | Construction | 2001 |
| TFSoft Oy | Information & communication | 2021 |
| TH Holding Oy | Financial services | 2021 |
| TLPM Invest Ab Oy | Financial services | 2026 |
| TMK Palvelut Oy Ab | Financial services | 2025 |
| TQ Byggtech Oy Ab | Construction | 2024 |
| TUHOLAISAPU POHJANMAA Oy | Administrative & support | 2023 |
| Talvo Oy | Information & communication | 2026 |
| Tarkmet Oy | Manufacturing | 1999 |
| Timberg Bygg & Renovering Ab Oy | Construction | 2018 |
| Timbergs Fastigheter - Kiinteistöt Ab Oy | Real estate | 2022 |
| Tirpal Oy | Manufacturing | 2000 |
| Toni Hahto Oy | Manufacturing | 2024 |
| Trapper Norden Ab | Information & communication | 2018 |
| Tritech Solutions AB filial i Finland | Information & communication | 2017 |
| Trovato Oy | Construction | 2003 |
| Turhat Jätkät avoin yhtiö | Arts & recreation | 2005 |
| US-Con Oy | Real estate | 2010 |
| VIJO Oy | Other services | 2016 |
| VILPE Oy | Manufacturing | 1984 |
| VKK Group Oy | Professional & scientific | 2022 |
| VKK Power Oy | Manufacturing | 2015 |
| VKK Works Oy | Manufacturing | 2023 |
| Vaasan Hanuri Center Ky | Wholesale & retail | 1999 |
| Vaasan Ikkunateippaus Oy | Professional & scientific | 2022 |
| Vaasan Kone ja tarvike Oy | Wholesale & retail | 2020 |
| Vaasan Kuljetuskanavat Oy | Manufacturing | 2023 |
| Vaasan Lämpöeristys Oy | Construction | 2021 |
| Vaasan Metallityö Oy | Manufacturing | 2010 |
| Vaasan Timanttiporaus Oy | Construction | 2015 |
| Vaasanläänin Ilmastointikeskus Ky | Wholesale & retail | 1990 |
| Varestuuli Oy | Energy | 2018 |
| Vasa Kylarcentral Kb | Wholesale & retail | 1995 |
| Vasa Skärgårdsbär Ab Oy | Manufacturing | 2019 |
| Veinvest Oy | Financial services | 2001 |