| 1537 Heikki Nuutinen Oy | Wholesale & retail | 2016 |
| Ammatillinen perhekoti Perhonen Oy | Health & social care | 2023 |
| Ariratex Oy | Manufacturing | 1995 |
| Automaalaamo ja Ruosteenesto Karjalan Kori Oy | Other services | 1984 |
| E & A Sissonen Ky | Agriculture & fishing | 1978 |
| Gymba Oy | Professional & scientific | 2007 |
| Heinävaaran Autohuolto ja Baari Oy | Wholesale & retail | 1991 |
| Heinävaaran Kone ja Metallityö Oy | Manufacturing | 1980 |
| Heinävaaran Pintakäsittely ja Maalaus Ky | Construction | 1986 |
| Itä-Karjalan Metsäpalvelu Ky | Agriculture & fishing | 2012 |
| Itä-Suomen Tili- ja Isännöintipalvelu Oy | Real estate | 2022 |
| JRT Sports Oy | Wholesale & retail | 2022 |
| JRT-Motorsport Oy | Manufacturing | 2002 |
| Japele Oy | Agriculture & fishing | 2018 |
| JokiForest Oy | Agriculture & fishing | 2018 |
| Kala-Apu Oy | Manufacturing | 1989 |
| Karei Set Oy | Agriculture & fishing | 2004 |
| Korpikoura Oy | Agriculture & fishing | 2026 |
| Kovin Oy | Administrative & support | 2013 |
| Kuljetus Kummunmäki Ky | Transport & logistics | 1987 |
| Kuljetusliike Rauno Tahvanainen Ky | Transport & logistics | 2001 |
| Marja Carelia Oy | Manufacturing | 1999 |
| Mastsystem Int'l Oy | Manufacturing | 1996 |
| Nordsys Oy | Wholesale & retail | 1997 |
| Ovesta Oy | Manufacturing | 1977 |
| Oy All-Plast Ab | Manufacturing | 1996 |
| P-K:n Hirsituote Ky | Wholesale & retail | 2010 |
| Pohjois-Karjalan Puu Oy | Manufacturing | 1983 |
| Putkijohto Kokko Ky | Construction | 1990 |
| Rautamet Ky | Manufacturing | 1990 |
| SocialKiwi Oy | Information & communication | 2024 |
| Spartan Code Oy | Information & communication | 2021 |
| Story Villa Oy | Arts & recreation | 2023 |
| Suuntakartta Oy Joensuu | Professional & scientific | 1995 |
| Talous- ja Kiinteistöpalvelu Kukkonen & Kukkonen Oy | Professional & scientific | 2018 |
| Tepin Kuljetus Ky | Transport & logistics | 1994 |
| Trans Turunen Oy | Transport & logistics | 2011 |
| Videoplace Ky | | 1988 |
| Vinvestment Oy | Professional & scientific | 2024 |
| Voimavaranto Oy | Professional & scientific | 2025 |