| Automaalaamo Kalliomaalaus Ky | Other services | 2019 |
| Demoman Oy | Construction | 2016 |
| E. Tammelin Ky | Transport & logistics | 1987 |
| Ekowood Oy | Construction | |
| Fellas Group Oy | Construction | 2017 |
| Hunkeler Acts OY | Professional & scientific | 2024 |
| Haikari Oy | Professional & scientific | 2021 |
| Haikula Oy | Professional & scientific | 1995 |
| Huutotöyryn Kyläkauppa Oy | Wholesale & retail | 2023 |
| JLS-Asennus Oy | Construction | 1998 |
| Kettula & Saarros Ky | Manufacturing | 1992 |
| Koneurakointi Kilkkilä Oy | Agriculture & fishing | 2011 |
| Koskema Oy | Construction | 2025 |
| Koskipannu Oy | Hospitality | 2022 |
| Koskiportti Ky | Hospitality | 1976 |
| Kuuomena Oy | Professional & scientific | 2000 |
| Lehtisen rakennus ja kone Oy | Construction | 2022 |
| MMTaimisto Oy | Wholesale & retail | 2025 |
| Maacenter Oy | Construction | 2008 |
| Maalausliike Turunen Kommandiittiyhtiö | Construction | 1990 |
| Maatanni Oy | Construction | 1995 |
| Omakylä Vuolenkoski Oy | Financial services | 2007 |
| Pompiitti Oy | Professional & scientific | 2022 |
| Rekata OY | Construction | 2022 |
| Rakennus J Pekkinen Oy | Construction | 2024 |
| Real Thing Oy | Administrative & support | 2020 |
| Repos-yhtymä Oy | Professional & scientific | 1975 |
| Rinomaster Oy | Construction | 1994 |
| Ruisranne Oy | Manufacturing | 1995 |
| Tuukkanen Consulting Oy | Professional & scientific | 2025 |
| Vemarak Oy | Real estate | 2016 |
| Vuolenkosken Kalastus Club Oy | Arts & recreation | 2010 |
| Vuolenkosken Lossiranta Oy | Hospitality | 2022 |
| Vuolenkosken Rantamesta Oy | Hospitality | 2019 |
| Vuolenkosken vesiosuuskunta VVOK | Water & waste | 2012 |