| Delight Packaging Oy | Manufacturing | 2013 |
| Dentservice Suomi Oy | Manufacturing | 1979 |
| Digilaskenta Oy | Professional & scientific | 2021 |
| Digitonic Oy | Information & communication | 2022 |
| Dreams beauty Imatra Oy | Other services | 2025 |
| E-K Arvo kierrätys oy | Wholesale & retail | 2021 |
| Ecolet Oü, Suomen Sivuliike | Construction | 2015 |
| EF Wood Research Oy | Manufacturing | 2005 |
| EK-Koura Oy | Administrative & support | 2026 |
| EKAS Oy | Construction | 2016 |
| EKAS Oy Kouvola | Construction | 2018 |
| Eminko OY | Professional & scientific | 2008 |
| EUCONSULTING Oy | Real estate | 2012 |
| East Asset Oy | Professional & scientific | 2021 |
| Ebius Oy | Professional & scientific | 2008 |
| Ecomarket Oy | Wholesale & retail | 2026 |
| Elektroway Oy | Construction | 2018 |
| Elfani Oy | Hospitality | 2022 |
| Elimira Oy | Hospitality | 2026 |
| Elitpro Ky | Information & communication | 2005 |
| Ellvis-Dental Oy | Manufacturing | 1997 |
| Eloca Oy | Construction | 2024 |
| Eläintarvike Norppis Oy | Wholesale & retail | 1997 |
| Ennakkohuoltopalvelu Lankinen & Taponen Oy | Construction | 1994 |
| Enso Alueverkko Oy | Energy | 1997 |
| Erg Sport Oy | Wholesale & retail | 2019 |
| Erikoisasennus K Kattainen Ky | Manufacturing | 1987 |
| Eristysliike P. Kiiskinen Ky | Construction | 1966 |
| Erofeev Oy | Construction | 2020 |
| Erpin Oy | Construction | 2024 |
| Errigal Services Finland Oy | Construction | 2024 |
| Etec Automation Oy | Construction | 1974 |
| Etec Property Management Oy | Professional & scientific | 2011 |
| Etelä-Karjalan Intertrade Oy | Professional & scientific | 2008 |
| Etelä-Karjalan Nuohoustoimi Oy | Administrative & support | 2011 |
| Etelä-Karjalan Peltitekniikka Oy | Construction | 1994 |
| Etelä-Karjalan Tapahtumat Ky | Administrative & support | 1998 |
| Etelä-Karjalan Venepalvelu Oy | Manufacturing | 2017 |
| Etelä-karjalan asennuspalvelu Oy | Other services | 2021 |
| Everia Oy | Information & communication | 2024 |
| Evrikka Oy | Administrative & support | 2004 |
| Evä-Kara Oy | Real estate | 1975 |
| Evä-Sijoitus Oy | Real estate | 1991 |
| Evä-Stock Oy | Financial services | 1987 |
| Exmonte Oy | Professional & scientific | 1998 |
| Exotrade Oy | Professional & scientific | 2008 |
| FDTech Oy | Education | 2022 |
| Fieldservice MP OY | Administrative & support | 2021 |
| FIMATEC Finnish Intelligent Module Apartments Oy | Professional & scientific | 2013 |
| Finnhus OY | Construction | 2022 |
| FTR Investments Oy | Real estate | 2021 |
| Fardes avoin yhtiö | Hospitality | 2016 |
| Felteh Oy | Wholesale & retail | 2007 |
| FiNiSa Service Oy | Construction | 2020 |
| Fiestamigos Oy | Wholesale & retail | 2006 |
| Fikko Oy | Information & communication | 2018 |
| Fin Helsink Oy | Hospitality | 2024 |
| FinFx Trading Oy | Hospitality | 2010 |
| Finadia Hoiva Oy | Health & social care | 2022 |
| Finavek Oy | Professional & scientific | 2019 |
| Finn Sport Logo Oy | Manufacturing | 2012 |
| Finnimor Oy | Wholesale & retail | 2010 |
| Finnish Creative Agency Oy | Professional & scientific | 2022 |
| Finnooa Imports Oy | Other services | 2020 |
| Finpilot Oy | Professional & scientific | 2003 |
| Fish It Oy | Manufacturing | 2023 |
| Fixikotti Oy | Administrative & support | 2025 |
| Flowhow Finland Oy | Manufacturing | 2010 |
| Forest Trans Logistics Oy | Wholesale & retail | 2016 |
| Fromni OY | Information & communication | 2019 |
| Future Objects Oy | Professional & scientific | 2022 |
| Futury Oy | Information & communication | 2021 |
| Fysikaalinen hoitolaitos Kuntokanava Ky | Health & social care | 1984 |
| FysioMaisteri Oy | Health & social care | 2023 |
| Fysiotrio Oy | Health & social care | 2025 |
| Gaia Music Oy | Arts & recreation | 1999 |
| Gamajan Eco Solutions Oy | Manufacturing | 2025 |
| Gasthaus Hänninen Ky | Hospitality | 1985 |
| Gemini-Kiinteistöt Oy | Real estate | 2007 |
| Get More Oy | Wholesale & retail | 2020 |
| Glax group oy | Administrative & support | 2018 |
| GrandKeeperFour Oy | Energy | 2024 |
| GrandKeeperOne Oy | Energy | 2023 |
| Green Beach Capital Oy | Financial services | 2023 |
| Green Mile Oy | Transport & logistics | 1984 |
| Greenray Kiinteistö Oy | Real estate | 2007 |
| Grilli Imatra Ky | Hospitality | 2017 |
| Gromo Oy | Arts & recreation | 2025 |
| Ground Zero Oy | Arts & recreation | 2021 |
| Grulla Ventura Oy | Transport & logistics | 2019 |
| Gulenmercan avoin yhtiö | Hospitality | 2013 |
| H & T Hatakka Oy | Wholesale & retail | 2009 |
| HEP Holding Oy | Wholesale & retail | 2022 |
| HT Industry Solutions Oy | Information & communication | 1998 |
| HaRi Cardboard Consulting Oy | Professional & scientific | 2024 |
| Hammaslaboratorio Valokorpi Oy | Health & social care | 1988 |
| Hammaslääkäri Jokke Oy | Health & social care | 2025 |
| Hankintaspesialistit Oy | Real estate | 2023 |
| Hannan pojat Oy | Construction | 2025 |
| Hansa Trukit Oy | Wholesale & retail | 2010 |