| AEJ Invest Oy | Financial services | 2010 |
| Anna's Darling Ky | Manufacturing | 2012 |
| Arkkikivi avoin yhtiö | Manufacturing | 2004 |
| Avoin yhtiö Juha ja Seppo Kauppinen | Construction | 1986 |
| Bite This Oy | Hospitality | 2025 |
| Bounce Solutions Oy | Information & communication | 2026 |
| Bulls Out Oy | Agriculture & fishing | 2026 |
| EKOIN OY Insinööripalvelut | Professional & scientific | 2008 |
| Elomäen Tila Oy | Agriculture & fishing | 2026 |
| Envitecpolis Oy | Professional & scientific | 2003 |
| EräWeikot Oy | Real estate | 2018 |
| Finta Oy | Professional & scientific | 1988 |
| Gasthaus Neuvola OY | Hospitality | 2008 |
| Green Vendela ky | Health & social care | 1998 |
| Harwus Oy | Agriculture & fishing | 2021 |
| Henkilökuljetus Rissanen Oy | Transport & logistics | 2007 |
| Hombu Oy | Education | 2007 |
| Huttunen Consulting Group Oy | Professional & scientific | 2019 |
| Huuskon Korjaamo Oy | Other services | 1985 |
| J.S.T Kauppinen Oy | Mining & quarrying | 2011 |
| JPKomulainen Oy | Financial services | 2024 |
| Jansa Welding Service Oy | Manufacturing | 2025 |
| Jari Suutarinen Oy | Wholesale & retail | 1995 |
| K-Suutarinen Oy | Financial services | 1974 |
| Kangaslammin Kesäkioski OY | Wholesale & retail | 2012 |
| KPM Rakenne Oy | Professional & scientific | 2005 |
| Kattari Oy | Construction | 2019 |
| Ki Oy Sonkajärven Lyseotie 1 | Real estate | 2020 |
| Kiinteistö Oy Hiekkalanhalli | Real estate | 1989 |
| Kiinteistö Oy Koivuhaka | Real estate | 2025 |
| Kimin bisnes Oy | Financial services | 2024 |
| Komulainen Invest Oy | Financial services | 2023 |
| Kone ja kaivutyö JMR Oy | Construction | 2020 |
| Konetyö Islander Ky | Mining & quarrying | 2011 |
| Konetyö Koistinen avoin yhtiö | Agriculture & fishing | 2024 |
| Koneurakointi Keränen oy | Construction | 2020 |
| Korjaamo Nissinen Ky | Other services | 1981 |
| Kuljetus A.Manninen Ky | Transport & logistics | 2017 |
| Kuljetus Jape Oy | Transport & logistics | 1998 |
| Kuljetus Kotilainen Oy | Transport & logistics | 2013 |
| L V Tatu Oy | Other services | 2005 |
| Lahjomattomat oy | Administrative & support | 2024 |
| LasLog Oy | Agriculture & fishing | 2025 |
| Lumik Oy | Manufacturing | 2007 |
| Luotosenkankaan Vesihuolto-osuuskunta | Water & waste | 1998 |
| Maalausliike Kantola Oy | Construction | 2018 |
| Maatalousyhtymä Kauppinen Arto, Juha ja Seppo | Agriculture & fishing | 2006 |
| Matkusjoen vesihuolto-osuuskunta | Water & waste | 1981 |
| Media-Tuovinen Oy | Professional & scientific | 2007 |
| Omatalo Oy | Manufacturing | 2021 |
| Ottopojan Vuokraus Oy | Administrative & support | 2023 |
| Paimet Ky | Manufacturing | 1982 |
| Palosenmäen Palvelukoti Oy | Health & social care | 1993 |
| Palvelukeskus Pipari Kommandiittiyhtiö | Hospitality | 1992 |
| Perhekoti Pitkälä Oy | Health & social care | 2025 |
| Pielisen Retki Oy | Hospitality | 2023 |
| Puomila Oy | Agriculture & fishing | 2025 |
| Putkipalvelu Kauppinen Oy | Construction | 2021 |
| Puutavarakuljetus Tuovinen Oy | Transport & logistics | 2003 |
| R. Komulainen Oy | Financial services | 2024 |
| RK-Creations Oy | Financial services | 2024 |
| Rakennusliike Niilo Huttunen Oy | Construction | 2010 |
| Rakennuspalvelu Koistinen Oy | Construction | 2000 |
| Ranset Ky | Health & social care | 2009 |
| Rasti-Service Oy | Administrative & support | 1995 |
| Ravintola Nonno Palermitano Oy | Hospitality | 2023 |
| SATEKON Ky | Professional & scientific | 2003 |
| Saronia Oy | Administrative & support | 2015 |
| Satapaja MotorSport, avoin yhtiö | Wholesale & retail | 2004 |
| Savon Autovälitys Oy | Wholesale & retail | 2025 |
| Savon Mittaustekniikka Ky | Professional & scientific | 1996 |
| Savon Vaunuvuokraamo Oy Kantola | Administrative & support | 1988 |
| Savon energiapuukauppa Oy | Agriculture & fishing | 2022 |
| Savon maa- ja piharakentajat Oy | Administrative & support | 1993 |
| Savotrak avoin yhtiö | Construction | 2004 |
| Sonar Films Oy | Information & communication | 2002 |
| Sonka-Huolto Oy | Wholesale & retail | 1990 |
| Sonkajärven Ajanviete Oy | Arts & recreation | 1994 |
| Sonkajärven Auto- ja Pienkonehuolto Oy | Other services | 2020 |
| Sonkajärven Eukonkanto Oy | Arts & recreation | 1998 |
| Sonkajärven Hirsirakenne ky | Manufacturing | 1987 |
| Sonkajärven Pesupalvelu Ky | Other services | 1984 |
| Sonkajärven Putkitalo Ky | Construction | 1979 |
| Sonkajärven Takala Oy | Real estate | 2011 |
| Sonkajärven Taksipalvelut Oy | Transport & logistics | 2024 |
| Sonkajärven Teollisuuskiinteistöt Oy | Real estate | 2020 |
| Sonkajärven Tilikeskus Oy | Professional & scientific | 1986 |
| Sonkajärven Vesi Oy | Water & waste | 2023 |
| Sonkakoti Oy | Real estate | 1992 |
| Sonkapölli Oy | Agriculture & fishing | 1989 |
| Sonkatalot Oy | Financial services | 1989 |
| Sähkötyö Kuosmanen Oy | Construction | 2005 |
| T&M Huoltopalvelu Oy | Other services | 2022 |
| Taidelasiliike Lasienkeli Ky | Wholesale & retail | 1998 |
| Takman Oy | Wholesale & retail | 1998 |
| Toipumo Oy | Health & social care | 2016 |
| Tunteidentila Oy | Health & social care | 2021 |
| Valeko Oy | Real estate | 2020 |
| Veiposet Oy | Real estate | 1991 |
| Veljekset Ronkainen Oy | Construction | 1981 |