| Agrok Oy | Wholesale & retail | 2008 |
| AntLo Oy | Administrative & support | 2013 |
| Arimark Ky | Wholesale & retail | 2000 |
| Arktiproc Solutions Oy | Information & communication | 2025 |
| Eläintohtori Kivuton Oy | Professional & scientific | 2006 |
| Groundec Oy | Wholesale & retail | 2020 |
| Huolto KaTu Oy | Other services | 2026 |
| Hutvakka Oy | Wholesale & retail | 2023 |
| Härveltävät Konepojat Oy | Construction | 2025 |
| Ilomantsin Yrityskiinteistöt Oy | Real estate | 2019 |
| JHA-Group Oy | Financial services | 2025 |
| JL Power Oy | Other services | 2009 |
| JPH-Maanrakennus Oy | Construction | 2000 |
| JPW Sijoitus Oy | Financial services | 2020 |
| Jakeluasema Rissanen Oy | Wholesale & retail | 2015 |
| Joen Laaturakennus Oy | Construction | 2013 |
| Joen Monitoimi Oy | Other services | 2024 |
| Joensuun Metsätyö Oy | Agriculture & fishing | 2017 |
| Joensuun Puukaluste Oy | Manufacturing | 1986 |
| Joensuun Tele-Set Ky | Construction | 1992 |
| Joensuun Viherkeskus Oy | Wholesale & retail | 2025 |
| Jokisauma Oy | Construction | 1995 |
| Juri Jolkkonen Oy | Wholesale & retail | 2002 |
| KV Color ja Tasoite Oy | Construction | 2007 |
| Kaisapari Oy | Professional & scientific | 2024 |
| Kakke Media Oy | Arts & recreation | 2025 |
| Kareliahoiva Oy | Health & social care | 2022 |
| Karjalan Autorakennus Oy | Other services | 1988 |
| Kaurisaho Oy | Other services | 2022 |
| KeJoTec Oy | Transport & logistics | 2020 |
| Kelluu Oy | Manufacturing | 2018 |
| Kiinteistö Oy Pogostan Vuokratalot | Real estate | 1989 |
| Kiinteistö Oy Pyhäselän Tiinala | Real estate | 1996 |
| Kiinteistö Oy Reijolan Louhelantie 36 | Real estate | 2013 |
| Konepaja J. Holopainen kommandiittiyhtiö | Manufacturing | 1991 |
| Konttorikonehuolto Kontkanen Ky | Manufacturing | 1993 |
| Kryptoasema Oy | Information & communication | 2022 |
| Kuljetusliike J. Tarvainen Oy | Transport & logistics | 2008 |
| Kuljetusliike T. Kolehmainen Ky | Transport & logistics | 1991 |
| Kyösti Simonen Oy | Real estate | 2007 |
| LVI-Insinööritoimisto Akel Oy | Professional & scientific | 2007 |
| Lahja- ja käsityömyymälä Liinu Oy | Wholesale & retail | 1997 |
| Logistics M. Kolehmainen Oy | Transport & logistics | 2024 |
| Loistohymy Oy | Health & social care | 2010 |
| Low Adventa Oy | Wholesale & retail | 2010 |
| M & J Näykki | Wholesale & retail | 2010 |
| MK Beauty & Esthetics Oy | Other services | 2025 |
| Marjakka Kommandiittiyhtiö | Agriculture & fishing | 1986 |
| Matexpro Oy | Other services | 2019 |
| Momentum Agency Oy | Wholesale & retail | 2023 |
| Mulopak Oy | Education | 1997 |
| Myrskylahti avoin yhtiö | Real estate | 1993 |
| Ollilanpiha Oy | Agriculture & fishing | 2024 |
| PA-Kuljetus Oy | Transport & logistics | 2015 |
| PIIPA TRAINING Oy | Professional & scientific | 2012 |
| Pakarinen Invest Oy | | |
| Pekotek Oy | Manufacturing | 2008 |
| Pihasuunnittelu Lappalainen Oy | Administrative & support | 2016 |
| Pohjois-Karjalan Loka Ky | Water & waste | 1982 |
| Polygonal North Oy | Professional & scientific | 2021 |
| Pub Mäntä Oy | Hospitality | 2020 |
| RT-Rahti OY | Transport & logistics | 2019 |
| Rahti Mafia Oy | Transport & logistics | 2022 |
| Rakennusliike Leinonen Oy | Construction | 2002 |
| Rakennuspalvelu Torni Oy | Construction | 2008 |
| Rakennustempo Oy | Manufacturing | 1978 |
| Rakennusurakointi Muranen Ky | Construction | 1990 |
| Reijolan Kuljetus Oy | Transport & logistics | 2019 |
| Reijolan Rahti Auto Oy | Transport & logistics | 2021 |
| Reijolan Ratsutallit Oy | Arts & recreation | 2026 |
| Reijolan Tilipalvelu Ky | Professional & scientific | 1989 |
| Saituri Oy | Information & communication | 2018 |
| Steelstep Oy | Manufacturing | 2024 |
| T & H Ahonen avoin yhtiö | Wholesale & retail | 2015 |
| TKR-Marketing Oy | Wholesale & retail | 2004 |
| TT-Systems Oy | Manufacturing | 2010 |
| Tepido Oy | Wholesale & retail | 1992 |
| Tertun Tuvat Oy | Real estate | 2020 |
| Teuvon Valo Oy | Construction | 1992 |
| Työosuuskunta OmaOn | Health & social care | 2026 |
| Valper Oy | Construction | 1992 |
| Varpasalo-Jokilahti vesiosuuskunta | Water & waste | 2025 |
| Viestra Infra Oy | Construction | 2020 |
| Viestra Oy | Construction | 1994 |
| Väkevä Rakenne Oy | Construction | 2021 |