| Rakennus AhKi Oy | Wholesale & retail | 2009 |
| Rakennus F. Grönfors Oy | Real estate | 1989 |
| Rakennustoimisto Ilpo Brandt Oy | Construction | 1983 |
| Raksakundi Oy | Construction | 2026 |
| Raksarami Oy | Construction | 2017 |
| Riistakiuru Oy | Manufacturing | 2021 |
| Risanka Oy | Wholesale & retail | 2007 |
| Risto Röytiö Ky | Wholesale & retail | 1982 |
| Roma-Aho Oy | Agriculture & fishing | 2013 |
| SSLap Avoin Yhtiö | Arts & recreation | 2012 |
| Salahmin Sora Oy | Mining & quarrying | 2013 |
| Sallantero Oy | Construction | 1990 |
| SavoLog Oy | Transport & logistics | 2024 |
| Savon Biokuljetus Ky | Transport & logistics | 2005 |
| Savon Datapalvelu Ky | Wholesale & retail | 2003 |
| Savon Lämpöliekki Oy | Wholesale & retail | 1993 |
| Savon Murskaus Oy | Mining & quarrying | 2013 |
| Savon Rakennus-Pojat OY | Construction | 2025 |
| Savon lattia- ja seinäpäällyste Oy | Construction | 2019 |
| Sijaiskoti Satuniemi Oy | Health & social care | 2020 |
| Siluettiverstas Oy | Manufacturing | 2019 |
| Stone Partners Oy | Construction | 2017 |
| Stone Parts Oy | Wholesale & retail | 2022 |
| Suomen Luomusiemen Oy | Wholesale & retail | 1990 |
| Suomen Osaamistalo Oy | Professional & scientific | 2000 |
| Suunnittelupalvelu Idealinja Ky | Professional & scientific | 2014 |
| Svärd Holding OY | Financial services | 2005 |
| Sähkäri Oy | Construction | 1995 |
| Sähkötyö Rantonen Oy | Construction | 2021 |
| TT Sähköpalvelu Oy | Construction | 2009 |
| Taivallahden Tassut Ky | Other services | 2025 |
| Taksi Janne Kattainen Ky | Transport & logistics | 2023 |
| Talkon Oy | Professional & scientific | 2022 |
| TalousMaa Oy | Professional & scientific | 2017 |
| Terni-Set Avoin yhtiö | Manufacturing | 1994 |
| Tietotulkki Oy | Financial services | 1987 |
| Tikanmaito Oy | Agriculture & fishing | 2018 |
| Tilakiuru Oy | Real estate | 2020 |
| Tilax Oy | Real estate | 2021 |
| Tilipitappi Oy | Professional & scientific | 2023 |
| Tiliporras Savo Oy | Professional & scientific | 2023 |
| TimTra Oy | Wholesale & retail | 2021 |
| Tuuliylläs Oy | Hospitality | 1990 |
| VALIVA Oy | Professional & scientific | 2009 |
| VaaranValo OSK | Construction | 2010 |
| Vieremän Pelti ja Ilmastointi Kommandiittiyhtiö | Construction | 1987 |
| Viljo Tavaratalo Oy | Wholesale & retail | 2012 |
| Villa Kirmakka Oy | Hospitality | 2008 |
| Vipinä Invest Oy | Real estate | 1999 |
| Virmaset Oy | Hospitality | 2022 |
| Vuokon Rohdosmyymälä Oy | Wholesale & retail | 2012 |
| Väinö Remes Ky | Transport & logistics | 1985 |
| Waarnan Kiinteistöt Ky | Real estate | 1983 |
| Wallen Hovi Oy | Hospitality | 2020 |
| WellO2 Oy | Wholesale & retail | 2000 |
| Wikli Control Oy | Professional & scientific | 2023 |
| Wikli Group Oy | Professional & scientific | 2018 |
| Wikli Kiinteistöt LKV Oy | Real estate | 2022 |
| Ylläskari Oy | Agriculture & fishing | 1990 |
| Ylä-Savon Kone- ja kierrätys Center Oy | Water & waste | 2025 |
| Ylä-Savon Metsäkonepalvelu Oy | Agriculture & fishing | 2008 |
| Ylä-Savon Terni Oy | Agriculture & fishing | 2007 |
| Zikini Oy | Manufacturing | 2020 |
| Zombie Noise Oy | Arts & recreation | 2009 |
| ÄäniRauta Oy | Wholesale & retail | 1998 |