| 1st Siivouspalvelu Oy | Administrative & support | 2026 |
| A Buckman Oy | Construction | 2025 |
| A M Buckman Ky | Construction | 2012 |
| A&H Lämpötekniikka Oy | Construction | 2019 |
| Active Healthy Life OY | Other services | 2023 |
| AJAVILLE Ky | Education | 2011 |
| AK Apu Ky | Other services | 2026 |
| AMB Works Oy | Construction | 2015 |
| Anve Invest OY | Real estate | 2026 |
| Ac Sähkötili Osk | Construction | 2014 |
| Agatha Kodit Oy | Health & social care | 2002 |
| Airi Ellen Ky | Manufacturing | 1989 |
| Alamikkelä Oy | Construction | 1991 |
| Anniina Halonen Oy | Health & social care | 2020 |
| Aspidiske Suomi Oy | Real estate | 2007 |
| Automaalaamo Oulu Ky | Other services | 2013 |
| Baseflow Oy | Administrative & support | 2020 |
| Bluestone Innovations Oy | Professional & scientific | 2021 |
| Calasta Oy | Wholesale & retail | 1996 |
| Carbar Oy | Hospitality | 2001 |
| CasaNordica Oy | Construction | 2026 |
| DDS Drives Oy | Real estate | 2009 |
| Data Craftery Oy | Information & communication | 2023 |
| Design Kimmo Takarautio Oy | Professional & scientific | 2009 |
| Drum Room Finland Oy | Professional & scientific | 2024 |
| Dynotest Center DTC Oy | Other services | 2009 |
| EMS Holding Oy | Professional & scientific | 2017 |
| EV Asema Oy | Wholesale & retail | 2020 |
| Effectio Oy | Manufacturing | 2013 |
| Ehtoolla Oy | Financial services | 2024 |
| Ekvidi Oy | Professional & scientific | 2013 |
| Elektrolaine Oy | Manufacturing | 2005 |
| Emailguru Oy | Professional & scientific | 2023 |
| Ergosofia Oy | Professional & scientific | 2009 |
| Eristysapu Oy | Construction | 1979 |
| Fiavle Oy | Manufacturing | 2012 |
| Finland & Lithuania Solutions Oy | Administrative & support | 2022 |
| Frostkol Distillery Oy | Manufacturing | 2026 |
| GENRE tuotanto Oy | Information & communication | 1989 |
| Ginway Holdings Oy | Professional & scientific | 2012 |
| H-Pro Oy | Other services | 2021 |
| HT Kapitaali Oy | Professional & scientific | 2018 |
| HT Motorace Oy | Professional & scientific | 2014 |
| Haka kauppapaikka Oy | Wholesale & retail | 2026 |
| Hankintakehitys Oy | Professional & scientific | 2023 |
| Hartikka Koteja Oy | Real estate | 2021 |
| HeiJuha Oy | Construction | 1992 |
| Heikkilä Investment Group Oy | Financial services | 2025 |
| Heikkilä Yhtiöt Oy | Agriculture & fishing | 2020 |
| Hostia Catering Oy | Hospitality | 2021 |
| House of Leather Lapland Ky | Wholesale & retail | 2006 |
| Huoltamo ja Grilli-Kahvio Vähäsarja Kommandiittiyhtiö | | 1990 |
| Huvivuokra Oy | Administrative & support | 2016 |
| Hyvinvointi Autiot Oy | Other services | 2017 |
| InnoOk Osk | Professional & scientific | 2017 |
| Innovations Import Finland Oy | Wholesale & retail | 2009 |
| Insinööritoimisto Lohi Ky | Real estate | 1983 |
| Insinööritoimisto R. Polojärvi Oy | Professional & scientific | 1983 |
| InstoPeak Oy | Professional & scientific | 2015 |
| IntoWorks Oy | Professional & scientific | 2014 |
| Invest 3K Oy | Professional & scientific | 2008 |
| Ip ja uhkatilannekoulutukset oy | Administrative & support | 2026 |
| Isännöinti Vesa Ojala Oy | Real estate | 2012 |
| J Nurkkala Oy | Transport & logistics | 1974 |
| J&H service Oy | Wholesale & retail | 2022 |
| JK Tähti Rakennus Oy | Construction | 2021 |
| JPH Team Oy | Other services | 2017 |
| JUU Invest Oy | Real estate | 2025 |
| Janina Emilia Leppänen Oy | Hospitality | 2026 |
| Jarkimo Oy | Professional & scientific | 2006 |
| Jastro Oy | Professional & scientific | 2016 |
| Jäälihalli Oy | Real estate | 1992 |
| Jäälin Maansiirto oy | Construction | 2015 |
| Jäälin Palvelukoti Oy | Health & social care | 2003 |
| Jäälin Palvelupiste Oy | Professional & scientific | 2000 |
| Jäälin Rakennus ja Pelti Oy | Construction | 2019 |
| Jäälintalli Oy | Arts & recreation | 2008 |
| K ja T Hurskainen Oy | Professional & scientific | 2025 |
| KT-tec Oy | Construction | 2019 |
| Kakskytseiska Oy | Administrative & support | 2025 |
| Karrim Oy | Administrative & support | 1994 |
| Katsastus Jääli Oy | Professional & scientific | 2023 |
| Kauneushoitola Cinderella Ky | Other services | 2003 |
| Kauppapuutarha Kukkiva Kunnas Oy | Agriculture & fishing | 1988 |
| Kaverisi Oy | Other services | 2022 |
| Keep ICT Finland avoin yhtiö | Information & communication | 2017 |
| Kiimingin Murske Ky | Construction | 1987 |
| Kiimingin Sora Oy | Mining & quarrying | 1975 |
| Kiimingin ratsastuskeskus Oy | Arts & recreation | 1992 |
| Kiinteistö Oy Jäälin Keskus | Real estate | 2020 |
| Kiinteistö Oy Keskus-Kauppa 10 | Real estate | 2025 |
| Kiinteistö Oy Kiimingin Heikinpelto | Real estate | 1991 |
| Kiinteistö Oy Kiimingin Pyyryväistie 17 | Real estate | 2012 |
| Kiinteistö Oy Kittilän Ahvenkankaan Kääpä 1 | Real estate | 2013 |
| Kiinteistö Oy Kivi-Maaria | Real estate | 2002 |
| Kiinteistö Oy Oulun Laakeritie 20 | Real estate | 2011 |
| Kiinteistö Oy Pico | Real estate | 2026 |
| Kiinteistö Oy Risto Isohätälä | Real estate | 2022 |
| Kiinteistöosakeyhtiö Hetan Kammi | Real estate | 2016 |
| Kiituli Oy | Wholesale & retail | 2022 |