| Tapahtumatuotanto Asemapaikka Osk. | Arts & recreation | 2020 |
| Tatar-Kampaamot Ky | Other services | 1982 |
| TattiSvan Oy | Manufacturing | 2006 |
| Team Manninen Oy | Transport & logistics | 2012 |
| Team Markkanen avoin yhtiö | Construction | 2003 |
| Tervon Lohilomakylä Oy | Real estate | 1987 |
| Therabit Ky | Other services | 2000 |
| Tietotuotanto Sepponen Oy | Professional & scientific | 2013 |
| Tilipalvelu Ojanne Oy | Professional & scientific | 2007 |
| Timbercon Oy | Construction | 2023 |
| Tohman Tikki Oy | Wholesale & retail | 1989 |
| Tompan-palvelu Oy | Health & social care | 2016 |
| Toppertig oy | Manufacturing | 2015 |
| Tradecap LPA Oy | Real estate | 1981 |
| Trouble & Bouble Tuotanto Oy | Arts & recreation | 1997 |
| Tuf-It Oy | Professional & scientific | 2022 |
| Tuki&Turvapalvelut Uutela Oy | Health & social care | 2026 |
| Tuulatex Kommandiittiyhtiö | Wholesale & retail | 1987 |
| Työyhteisöpalvelut Niko Kivimäki Oy | Education | 2024 |
| Täsmätauko Oy | Arts & recreation | 2019 |
| VSM Yritys- ja Ympäristöpalvelut Oy | Education | 2006 |
| VariBoats Oy | Manufacturing | 2020 |
| Varpa-Set Oy | Manufacturing | 1992 |
| Vedenjakajan Viinitila Oy | Manufacturing | 2020 |
| Vehmaskoti Oy | Health & social care | 2012 |
| Vejudo oy | Arts & recreation | 2020 |
| ViTalent Engineering Oy | Professional & scientific | 2026 |
| Viestintä Oy Prodictum | Professional & scientific | 2008 |
| Vilin Verstas Oy | Manufacturing | 2023 |
| Virtasalmen Matkailu Oy | Hospitality | 2016 |
| Visaplast Ky | | 1983 |
| Vision Services Oy | Information & communication | 2023 |
| Vobiscum Advisory Oy | Professional & scientific | 2025 |
| Voltia Oy | Construction | 2026 |
| Von Bentz Oy | Real estate | 1992 |
| Väisäsen Kukkakauppa ja Hautaustoimisto Ky, om. P. Nenonen | Other services | 1990 |
| Waahteraharju Oy | Real estate | 2021 |
| Wanhan neuvolan majatalo Oy | Hospitality | 2021 |
| Weld Service Finland Oy | Manufacturing | 2012 |
| Why and You Prosper Oy | Professional & scientific | 2025 |
| Xentrix Vision Oy | Information & communication | 2024 |
| Y & Y Lehtikoti Oy | Wholesale & retail | 2000 |
| Yrityspalvelu Nykänen Oy | Professional & scientific | 2006 |
| Ys-k Oy | Transport & logistics | 2025 |
| Äänitalli kommandiittiyhtiö | Information & communication | 1983 |