| Kontiolahden Tilitoimisto Oy | Professional & scientific | 1981 |
| Kotileipomo Riikonen Oy | Manufacturing | 1984 |
| Kotopalvelut Kotisi Parhaaksi Oy | Construction | 2005 |
| Kotoruoka Oy | Hospitality | 2024 |
| Koulutuspalvelu Pajunen Oy | Education | 2019 |
| Kruunuhuone Oy | Other services | 2024 |
| Kuljettajapalvelu J & P Kallinen avoin yhtiö | Transport & logistics | 2007 |
| Kuljetus T. Kinnunen Oy | Transport & logistics | 2009 |
| Kuljetus Trans Vauhkonen Oy | Transport & logistics | 2020 |
| Kuljetusliike Marko Juntunen Oy | Transport & logistics | 1995 |
| Kuljetusliike Sami Juntunen Oy | Transport & logistics | 2004 |
| Kuljetuspalvelu Matti Ikonen Ky | Transport & logistics | 2002 |
| Kurkinen Yhtiöt Oy | Manufacturing | 2021 |
| Kuvavelhot Oy | Professional & scientific | 2010 |
| Kylmäojan Kauppahuone Oy | Financial services | 2020 |
| Kymen Portti Ky | Wholesale & retail | 1983 |
| LVI-Palvelu Kurkinen Oy | Construction | 1997 |
| Lehmolan Fysioterapia Oy | Health & social care | 1985 |
| Lehmon Koivu Ky | Wholesale & retail | 1998 |
| Lehmon Padel Oy | Arts & recreation | 2024 |
| Lehmon Puutarhatila Oy | Agriculture & fishing | 1993 |
| Leipomo Kotiherkku Oy | Manufacturing | 2014 |
| Lexa Works Oy | Construction | 2023 |
| Lieksan sementtivalimo ja kuljetus Nevalainen Ky | Construction | 1983 |
| Lootecin Oy | Real estate | 2020 |
| Louhiranta Oy | Construction | 2017 |
| ME Holding Oy | Professional & scientific | 2021 |
| MME Group oy | Financial services | 2016 |
| Maryadele Oy | Wholesale & retail | 1992 |
| Master Kodit Oy | Construction | 2015 |
| Master Yhtiöt Oy | Professional & scientific | 2004 |
| Mastvest Oy | Transport & logistics | 2020 |
| Mattikukkaro Oy | Hospitality | 2005 |
| Medisize Oy | Manufacturing | 2006 |
| MeiMei Consulting Oy | Information & communication | 2019 |
| Metsä-Karvinen Oy | Agriculture & fishing | 1988 |
| Metsämonex Oy | Professional & scientific | 2006 |
| MiSystems Oy | Wholesale & retail | 2020 |
| Nanocomp Oy Ltd | Manufacturing | 1997 |
| NaviVeikot Oy | Information & communication | 2013 |
| Nuohous- ja Ilmastointipalvelu Mikko Koukku Oy | Administrative & support | 2019 |
| Ostella Oy | Real estate | 2004 |
| Otto Invenius Oy | Arts & recreation | 2023 |
| Oy Nordhem Ab | Construction | 2025 |
| P-K:n Metsätiimi Oy | Agriculture & fishing | 1993 |
| Partnet Solutions Oy | Financial services | 2021 |
| Pentalane Oy | Manufacturing | 2007 |
| Pinesteel Oy | Manufacturing | 2014 |
| Pogosta Forest Oy | Agriculture & fishing | 2024 |
| Pohjois-Karjalan Juhla- ja Pitopalvelu Avoin yhtiö | Hospitality | 1997 |
| Poke box Oy | Wholesale & retail | 2024 |
| Progenitor Oy | Information & communication | 2026 |
| Rakennusliike S. Hiltunen OY | Construction | 2008 |
| RH kalibrointi Oy | Professional & scientific | 2016 |
| RTA Suomi Oy | Professional & scientific | 2007 |
| Rakennuskajo Oy | Construction | 1992 |
| Rakennuskonsultointi Lindroos Oy | Real estate | 2019 |
| Rakennusliike Laukkanen Oy | Construction | 2021 |
| Rakennusliike Redhex Oy | Construction | 2019 |
| Rakennusliike Seppo Hakkarainen Oy | Construction | 1982 |
| Rakennuspalvelu Armia Oy | Construction | 2025 |
| Ramapro Oy | Construction | 2007 |
| Ratsutila A&K Oy | Education | 2010 |
| River'o'Rama Oy | Information & communication | 2010 |
| RiverGames Oy | Financial services | 2016 |
| Robopaja OY | Manufacturing | 2017 |
| RomuRitari Oy | Wholesale & retail | 2007 |
| Satumaa-Risteilyt Ky | Transport & logistics | 2002 |
| SF Sound Oy | Information & communication | 2004 |
| STeam Rakennus Oy | Construction | 2018 |
| Sagadent Oy | Health & social care | 2023 |
| Salves Oy | Construction | 2019 |
| Seijan Lounas ja Juhlat Oy | Hospitality | 2008 |
| Setero Oy | Arts & recreation | 2023 |
| SiamFin Oy | Financial services | 2021 |
| Steel Boys Oy | Transport & logistics | 2008 |
| SunTechoy Oy | Wholesale & retail | 2022 |
| Suojana Oy | Information & communication | 2026 |
| Suomen Ikime Oy | Wholesale & retail | 1989 |
| Suomen Katukeittiöt Oy | Hospitality | 2024 |
| Suomen Kontio-Yhtiöt Oy | Transport & logistics | 2019 |
| Suomen Kunttamestarit Oy | Construction | 2022 |
| Suomen Laituriasennus Oy | Construction | 2020 |
| Suorannan Pienryhmäkoti Oy | Health & social care | 2007 |
| Sähköasennus Kuronen Oy | Construction | 1984 |
| Taksi JK OY | Transport & logistics | 2019 |
| TP-Vuokraus Oy | Administrative & support | 1989 |
| TT-Rengas Oy | Wholesale & retail | 2011 |
| TVT-Style Ky | Wholesale & retail | 2005 |
| Taitopaja Pikku Ihme Ky | Professional & scientific | 2011 |
| Taksi Eschner Oy | Transport & logistics | 2014 |
| TekPal Ky | Professional & scientific | 2004 |
| Teknix OY | Construction | 2021 |
| Teosipi Oy | Manufacturing | 2021 |
| TerHy Oy | Arts & recreation | 2013 |
| Three Empty Cases Oy | Wholesale & retail | 2012 |
| Ticcola Oy | Wholesale & retail | 2023 |
| Tilimari Ky | Professional & scientific | 1992 |
| Timexout Oy | Wholesale & retail | 2024 |
| ToGrow Oy | Professional & scientific | 2018 |