| 24 Varasto Oy | Transport & logistics | 2024 |
| A ja T Myyry Oy | Agriculture & fishing | 1981 |
| AU-Trainer Oy | Manufacturing | 2011 |
| AW EAST Oy | Other services | 2020 |
| Aeterna Capital Oy | Financial services | 2026 |
| AgroNova Genetics Oy | Professional & scientific | 2025 |
| Aillos Oy | Wholesale & retail | 2019 |
| Air Spiralo Oy | Manufacturing | 2015 |
| Aktiivius Oy | Construction | 2013 |
| AlproSteel Oy | Manufacturing | 1998 |
| Alsiva Oy | Manufacturing | 1994 |
| Apila Group Oy Ab | Professional & scientific | 2006 |
| Arctic Biotech Oy | Professional & scientific | 2019 |
| Ase Utra Oy | Manufacturing | 2002 |
| Betonilattiat Kettunen Oy | Construction | 2023 |
| Bioinno PaTu Oy | Professional & scientific | 2010 |
| Bunch Oy | Construction | 2022 |
| Calvent Oy | Construction | 2023 |
| Carle Invest Oy | Financial services | 2022 |
| Catering Lynx Oy | Hospitality | 2013 |
| Coffee & Crocheting Oy | Arts & recreation | 2023 |
| Crystal Promotions Oy | Professional & scientific | 2016 |
| Dinola Oy | Hospitality | 2024 |
| EH Services Oy | Manufacturing | 2000 |
| EH-Protopaja Oy | Manufacturing | 1992 |
| Easturva Oy | Professional & scientific | 2022 |
| Eekoo Kyyti Oy | Transport & logistics | 2008 |
| Ember Oy | Administrative & support | 2019 |
| Enerke Oy | Construction | 2002 |
| Equidomi Oy | Agriculture & fishing | 2016 |
| Euro North Oy | Wholesale & retail | 2001 |
| FS Sportwear Oy | Wholesale & retail | 2021 |
| Faceimage Oy | Other services | 2022 |
| Farane Oy | Health & social care | 2013 |
| Farmers Kontro Oy | Agriculture & fishing | 1995 |
| Fasciall Oy | Arts & recreation | 2020 |
| FinEq International Oy | Manufacturing | 2015 |
| Fodesco Oy | Manufacturing | 1986 |
| Forking Future Oy | Professional & scientific | 2024 |
| Fox-training Ky | Education | 2017 |
| Granberg Rakentajat Oy | Construction | 2026 |
| HK Varma Oy | Manufacturing | 2001 |
| HKH-Rent Oy | Wholesale & retail | 2019 |
| Hinauspalvelu Kalevi Oy | Transport & logistics | 1997 |
| Huoltolinkki Oy | Administrative & support | 2018 |
| Huoneistosisustus Invenius Oy | Construction | 1990 |
| ITM Vakuutuspalvelu Oy | Financial services | 2017 |
| Ideatore Oy | Professional & scientific | 2012 |
| Insinööritoimisto Pekka Hautala Oy | Professional & scientific | 1996 |
| J & J Auto- ja venekorjaus Avoin yhtiö | Manufacturing | 2007 |
| J2 Tikka Oy | Wholesale & retail | 2026 |
| Jdipper OY | Manufacturing | 2016 |
| Jokikate OY | Construction | 2015 |
| JOTECO Oy | Construction | 2007 |
| JPJ Ravintolat Oy | Hospitality | 2019 |
| JTA-Invest Oy | Real estate | 2002 |
| Jape Clean Ky | Administrative & support | 1998 |
| Jari P Eskelinen Ky | Wholesale & retail | 2006 |
| Jarku Ky | Construction | 1996 |
| Joen Automesta Oy | Wholesale & retail | 2001 |
| Joen Sähköpojat Oy | Construction | 2015 |
| Joensuun Ajokoulutus Ky | Education | 2008 |
| Joensuun Autokoulu Nevalainen Ky | Education | 2001 |
| Joensuun Kylmätekniikka Oy | Construction | 2007 |
| Joensuun Rakennuspurku ja Timanttiurakointi Oy | Construction | 1997 |
| Joensuun Sitomopalvelut Oy | Other services | 2005 |
| Joensuun Tilipalvelu Oy | Professional & scientific | 1994 |
| Jokapaikan Käsipari avoin yhtiö | Health & social care | 2018 |
| Jokarpi Oy | Construction | 2010 |
| Josava avoin yhtiö | Wholesale & retail | 2018 |
| Jotwire Oy | Manufacturing | 1987 |
| Jykäx Oy | Transport & logistics | 1981 |
| KPT Energy Law Consulting Oy | Professional & scientific | 2014 |
| Kajoka Oy | Wholesale & retail | 2002 |
| Kallenhoito Oy | Health & social care | 2021 |
| Kantoapu Kuopio Oy | Transport & logistics | 2021 |
| Karelia Code Oy | Information & communication | 2025 |
| Karelia Kodit Oy | Construction | 2019 |
| Karelian Kattotiimi Oy | Construction | 2016 |
| Karelian Keräysmetalli Oy | Water & waste | 2010 |
| Karelian RTA Oy | Professional & scientific | 2026 |
| Karelian Vahinkopalvelut Oy | Professional & scientific | 2020 |
| Karvest Oy | Construction | 2014 |
| Kasvu- ja Kehityspalvelut Kas+Ke Oy | Professional & scientific | 2019 |
| Kehitysrahoitus Veikko Tahvanainen Oy | Professional & scientific | 2024 |
| Keskisalo Group Oy | Professional & scientific | 2024 |
| Kiinteistö Oy Hallinpaikka | Real estate | 1992 |
| Kiinteistö Oy Hallipari | Real estate | 2007 |
| Kiinteistöhoito J. Karvonen Oy | Administrative & support | 2018 |
| Kiinteistöhoito Romppanen OY | Administrative & support | 2020 |
| Kiinteistöhuolto & Remontti Kinnuset Oy | Administrative & support | 2007 |
| Kiinteistökehitys Laukkanen Oy | Hospitality | 2019 |
| Kiiskinen Consulting Oy | Administrative & support | 2024 |
| Kivityö T.Kinnunen Ky | Construction | 2006 |
| Kleoverse Oy | Information & communication | 2021 |
| Koivutar Oy | Wholesale & retail | 2011 |
| Koneyhtymä Tahvanainen Oy | Real estate | 1979 |
| Koneyhtymä Veljekset Salo Avoin Yhtiö | Construction | 1991 |
| Kontio-Sähkö Oy | Construction | 2024 |
| Kontiolahden Autopalvelu Oy | Other services | 2017 |