| AhertajaT Group Oy | Financial services | 2025 |
| Alavieskan Asunnot Oy | Real estate | 2020 |
| Alavieskan Kehityskeskus Oy | Construction | 2000 |
| Alavieskan LVI Oy | Construction | 1991 |
| Alavieskan Sport Ky | Wholesale & retail | 1985 |
| Alpuan Valinta-Vinkit Ky | Real estate | 1991 |
| Auto- ja Konekorjaamo Marjakangas Oy | Other services | 1990 |
| Avoin yhtiö Poika - Rukat | Hospitality | 1988 |
| Block Elements Group Oy | Manufacturing | 2025 |
| Casa Palvelut Oy | Transport & logistics | 2019 |
| Charcoal Finland Oy | Manufacturing | 1999 |
| EH-Turkis Oy | Agriculture & fishing | 1995 |
| ER-Pinta Oy | Manufacturing | 1996 |
| Elina Tuulia Oy | Administrative & support | 2023 |
| Erkki Hannula Oy | Agriculture & fishing | 1980 |
| Giga ES Oy | Energy | 2019 |
| Haapajärven Maaliskuu Avoin Yhtiö | | 1986 |
| Havatrans Oy | Transport & logistics | 2022 |
| Hillin Tilipalvelu Oy | Other services | 2014 |
| Hyötykuorma Oy | Transport & logistics | 1997 |
| Ismo Jutila Oy | Manufacturing | 2022 |
| J & V Care Oy | Agriculture & fishing | 2021 |
| J. Ström Oy | Construction | 2014 |
| J.Kääntä Oy | Construction | 2017 |
| Juku Mech OY | Mining & quarrying | 1989 |
| JXI-Line Oy | Transport & logistics | 2019 |
| Jimko Oy | Construction | 2021 |
| JuPiPi Oy | Other services | 2023 |
| Jukumaja Oy | Real estate | 1985 |
| Jäte- ja kiinteistöpalvelu Ky R. Okkonen | Water & waste | 1988 |
| K. Isotalus Oy | Administrative & support | 2014 |
| KJ Monitoimi oy | Manufacturing | 2025 |
| KaVi-Rakennus avoin yhtiö | Construction | 2014 |
| Kaksvipu Holding Oy | Financial services | 2025 |
| Kalajokilaakson Taksi Oy | Transport & logistics | 2022 |
| Karja Rahti Pudas Oy | Wholesale & retail | 1984 |
| KauTra Oy | Other services | 2023 |
| Konepalvelu Sorvala Oy | Construction | 2026 |
| Kuljetusliike S & H Kauppila Oy | Transport & logistics | 1997 |
| Kääntä Group Oy | Construction | 2022 |
| Kääntä Kiinteistöt Oy | Real estate | 2023 |
| LVI Pisara Oy | Construction | 2022 |
| Laaksojen Laatutyö Oy | Construction | 2022 |
| Lissun BAR Oy | Hospitality | 2024 |
| Louhinta H Saari Oy | Construction | 1998 |
| Louhinta Kääntä Oy | Construction | 2011 |
| Maalausliike Takkunen avoin yhtiö | Construction | 2013 |
| Maansiirto Kari Huttunen Oy | Construction | 2017 |
| Maniment Oy | Professional & scientific | 2024 |
| MarKon Oy | Agriculture & fishing | 2008 |
| Markku Myntti Ky | Construction | 1986 |
| Nistom Oy | Construction | 2011 |
| Nurkkalan Katto- ja Rakennuspalvelu Oy | Construction | 2026 |
| PJK-Murske Avoin yhtiö | Mining & quarrying | 1995 |
| Pellonlaita Oy | Transport & logistics | 2025 |
| Pokela Invest Oy | Wholesale & retail | 1990 |
| R-Automation Oy | Information & communication | 2022 |
| RAU-Service Oy | Construction | 2006 |
| RB Kiinteistöpalvelu Avoin yhtiö | Administrative & support | 2026 |
| RTP-Tuote Oy | Construction | 2009 |
| RaHi Group Oy | Construction | 2025 |
| Raikas Eko Oy | Manufacturing | 2024 |
| Riveron Oy | Real estate | 2004 |
| Sakasi Oy | Other services | 2025 |
| Saukkosen Kuljetus Oy | Transport & logistics | 2020 |
| Scandinavian Garlic Oy | Manufacturing | 2020 |
| Taksipalvelu Hintsalat avoin yhtiö | Transport & logistics | 2004 |
| Tapu Oy | Manufacturing | 2008 |
| Tarviketalli Oy | Wholesale & retail | 2020 |
| Thyronis Group Oy | Financial services | 2025 |
| Tiliviesti Oy | Professional & scientific | 2025 |
| Tuomo Jutila Oy | Agriculture & fishing | 2023 |
| Umprella Oy | Administrative & support | 2024 |
| Veikko Jutila Oy | Transport & logistics | 1985 |
| Vieskan Elementti Oy | Manufacturing | 1968 |
| Vieskan Maarakennus Oy | Construction | 2015 |
| Vieskan Metalli Oy | Manufacturing | 1978 |
| Vieskan Rahti Oy | Transport & logistics | 1993 |
| Vieskan Service Team Oy | Manufacturing | 2018 |
| Vieskan Teräskone Ky | Manufacturing | 1985 |
| Vieskan Terätyö Ky | Manufacturing | 1994 |
| Villa Ruusa Oy | Professional & scientific | 2012 |
| Vääräkosken Infra Oy | Construction | 2026 |
| Vääräkosken Kone Avoin Yhtiö | Agriculture & fishing | 2010 |
| studio Takkunen Oy | Professional & scientific | 2025 |