| Peimarin remontti ja metallityö Oy | Manufacturing | 2022 |
| Peimarin sahaus Oy | Manufacturing | 2021 |
| Peltisepänliike J. Pohjaluoto Oy | Construction | 1987 |
| Perhekoti Sarijanne Oy | Health & social care | 2000 |
| Peuravaaran Puutarha Oy | Agriculture & fishing | 2014 |
| Pocadel Oy | Manufacturing | 1990 |
| Polar Curve Oy | Transport & logistics | 2008 |
| Primeri Oy | Professional & scientific | 1996 |
| Puisto Invest Oy | Construction | 2010 |
| Pulkki Group Oy | Other services | 2025 |
| RT-Sound Oy | Hospitality | 1995 |
| Rakennus Huuhka Oy | Real estate | 2012 |
| Rakennusliike Kannas Oy | Construction | 2019 |
| Rantolan Riikkala Oy | Real estate | 2011 |
| Reivikärry Oy | Administrative & support | 2025 |
| Reliabit avoin yhtiö | Information & communication | 2005 |
| Rokanco Oy | Other services | 2016 |
| Sallasmaa & Norokytö Oy | Professional & scientific | 1982 |
| Salmensuun Tila Oy | Agriculture & fishing | 2018 |
| Salon Maa- ja Vesirakennus Oy | Construction | 1972 |
| Sanna Veijalainen Ky | Wholesale & retail | 1992 |
| Saustilan Maanrakennus Oy | Construction | 2014 |
| Sauvon Kebabpizzeria Oy | Hospitality | 2019 |
| Sauvon Konekaivuu Oy | Construction | 1987 |
| Sauvon Maanrakennus Oy | Construction | 1975 |
| Sauvon Pelti- ja Metalli Ky | Construction | 1997 |
| Sauvon Puotipuksut Oy | Wholesale & retail | 2017 |
| Sauvon Rakennuspalvelu Oy | Construction | 2014 |
| Sauvon Sali Oy | Arts & recreation | 2014 |
| Sauvon Sähkötarvike Oy | Construction | 1963 |
| Sauvon Vesihuolto Oy | Water & waste | 2014 |
| Sauvon Vuokra-asunnot Oy | Real estate | 2024 |
| Sauvon Yhteistalo O.Y. | Real estate | 1928 |
| Sauvonlahden Luontoretket Oy | Agriculture & fishing | 1997 |
| Sauvoworks Oy | Administrative & support | 2020 |
| Seinäjoen Oma Tori Oy | Wholesale & retail | 1996 |
| SharpEx Oy | Health & social care | 2019 |
| Smaikku Oy | Hospitality | 2019 |
| Stetsenko ja Yritys Oy | Other services | 2026 |
| Suunnittelutoimisto Martti Kanerva Oy | Professional & scientific | 2013 |
| Timperin Kiinteistö OY | Construction | 2015 |
| Trainrrr OY | Education | 2015 |
| TS-EuroMarine Solutions Oy | Wholesale & retail | 2025 |
| Taimikellari Oy | Wholesale & retail | 1989 |
| Taksi Kaarto Oy | Transport & logistics | 2014 |
| Talopalvelut Mäkinen Oy | Administrative & support | 2025 |
| Tapsun Keittiö Oy | Hospitality | 2026 |
| Tedex Oy | Professional & scientific | 1994 |
| Teknoteam Oy | Construction | 2010 |
| Teotica Oy Ab | Professional & scientific | 2016 |
| Tikita Oy | Real estate | 2023 |
| Timperin Keskus Kiinteistö Oy | Real estate | 2014 |
| Timperin Rauta Oy | Wholesale & retail | 2019 |
| Tosiviihde Oy | Information & communication | 1997 |
| Turun Automaatio ja Lvi Oy | Construction | 1997 |
| Turun Seudun Kiinteistöhuolto Oy | Administrative & support | 2023 |
| Turun Tilivoima Maarit Virta Ky | Professional & scientific | 1992 |
| Turunmaan korjausrakentamisosuuskunta | Construction | 2006 |
| Uotkullan Tila Oy | Agriculture & fishing | 2022 |
| Up Group Oy | Construction | 1992 |
| VMT Steel Oy | Professional & scientific | 2000 |
| VPN Engineering Oy | Manufacturing | 2025 |
| VS-Coating avoin yhtiö | Construction | 1994 |
| Vinter Services Oy | Hospitality | 2021 |
| Virtor Oy | Manufacturing | 2023 |
| XVT Group Oy | Construction | 2022 |
| Ykkös Kyydit Oy | Transport & logistics | 2014 |
| utefix oy | Real estate | 2018 |