| Palo Adventures Oy | Administrative & support | 2021 |
| Perämeren Trooli Oy | Agriculture & fishing | 2023 |
| PianoBased Oy | Education | 2021 |
| Plusoikoja Kantomaa Oy | Health & social care | 2018 |
| Polar Suunnittelu Oy | Professional & scientific | 2006 |
| RLK Nurmi Oy | Construction | 1994 |
| Raappanan Lohi Kommandiittiyhtiö | Agriculture & fishing | 1987 |
| Ratsastuskeskus ABC Oy | Arts & recreation | 2018 |
| Ratsastuskeskus Tähtihetki Oy | Education | 2025 |
| Rento-Ruka Oy | Real estate | 2005 |
| Restamigia Oy | Arts & recreation | 2025 |
| Rock Fishing Finland Oy | Wholesale & retail | 2020 |
| Rooper Oy | Professional & scientific | 2009 |
| Ruostesuo Consulting Oy | Professional & scientific | 2011 |
| Ruskon Autopesu Huolto ja korjaamo Oy | Other services | 2024 |
| SHTrooli Oy | Financial services | 2023 |
| STEM Capital Oy | Financial services | 2026 |
| SalesHarmony Oy | Professional & scientific | 2024 |
| Sessionstore Oy | Other services | 2024 |
| Siterak Oy | Construction | 1990 |
| Sonalab Oy | Information & communication | 2021 |
| Surasi Oy | Construction | 2007 |
| Swift Horse Ravintola Oy | Hospitality | 2017 |
| TMP HorseWellness Oy | Arts & recreation | 2026 |
| TTA Invest Oy | Financial services | 2023 |
| Tiiakatriina Sound Oy | Arts & recreation | 2024 |
| Tilitoimisto Horisontti Oy | Professional & scientific | 1991 |
| Tilitoimisto Tilmed Ky | Professional & scientific | 2006 |
| Timanttisiivoojat Oulu Oy | Administrative & support | 2017 |
| Tirpe Oy | Professional & scientific | 2007 |
| Toimitilat Ylitalo Oy | Real estate | 2005 |
| Tuleto Oy | Professional & scientific | 2026 |
| Tulevaisuutesi Turvaaja Oy | Financial services | 2022 |
| Tunturiauto Oy | Other services | 1999 |
| Törmän Hunaja Oy | Agriculture & fishing | 2025 |
| Vainajankuljetus Oulu Oy | Other services | 2023 |
| Vakuutuskeisari Oy | Financial services | 2026 |
| Vakuutusmyynti A.Mäkelä Oy | Real estate | 2014 |
| Vehkaperä Holding Oy | Financial services | 2026 |
| Vehkaperän Kala Oy | Agriculture & fishing | 1996 |
| Ventiuno Capital Oy | Financial services | 2025 |
| Virpi Marina Oy | Transport & logistics | 2021 |
| Virpimaneesi Oy | Real estate | 1999 |
| Virpiniemen Venesatama Oy | Arts & recreation | 2026 |
| Virpiniemen koirametsä Oy | Arts & recreation | 2026 |
| Virpiniemi Golf Oy | Arts & recreation | 2004 |
| WGD Center Oy | Real estate | 2018 |
| Winebar Paljetti Oy | Hospitality | 2026 |
| iisiurakointi Oy | Construction | 2026 |
| iisivuokraus Oy | Administrative & support | 2025 |
| omiar oy | Hospitality | 2019 |