| Finemo Holding Oy | Professional & scientific | 2023 |
| Finnegan OY | Construction | 2014 |
| Finnolex Oy | Professional & scientific | 2010 |
| Fiocon Oy | Construction | 2019 |
| Firebusters Oy | Construction | 2023 |
| Flexdata Oy | Information & communication | 1985 |
| Fresh Lemon Oy | Other services | 2022 |
| GeMi Infra Oy | Construction | 2022 |
| Goatshow Ventures Oy | Professional & scientific | 2022 |
| Grey Realm Arts Oy | Information & communication | 2020 |
| HUKKAMIX Oy | Wholesale & retail | 2022 |
| HaBalance Oy | Other services | 2023 |
| Hairak Oy | Construction | 1996 |
| Haivest Oy | Professional & scientific | 1989 |
| Hammas Hyry OY | Health & social care | 2023 |
| Hammashoito Annette Ahola Oy | Health & social care | 1995 |
| Harvest Properties Oy | Financial services | 2021 |
| Hekefix Oy | Construction | 2019 |
| Helpe Sijoitus Oy | Financial services | 2024 |
| Helsingin Teräslinja Oy | Wholesale & retail | 2000 |
| Helsingin Viherhuolto Oy | Administrative & support | 2004 |
| Herko & Co Oy | Administrative & support | 2019 |
| Highwood Oy | Professional & scientific | 2020 |
| Hiusstudio Beauty Box avoin yhtiö | Other services | 2015 |
| HongisHeppa Oy | Agriculture & fishing | 2024 |
| Horsma Invest Oy | Financial services | 1990 |
| Hukseli Oy | Professional & scientific | 2026 |
| Hutina Holding Oy | Financial services | 2022 |
| Hyvä Kunto Invest Oy | Administrative & support | 2013 |
| Hyötytila Oy | Real estate | 2020 |
| Högfors Metalliosuuskunta | Professional & scientific | 2026 |
| I2I-Rakennus OY | Construction | 2023 |
| IMT-Consulting Oy | Professional & scientific | 2022 |
| IT-Olennot Oy | Information & communication | 2026 |
| Innolumen Oy | Construction | 2019 |
| J P Pavas Oy | Wholesale & retail | 1995 |
| J Peura Oy | Construction | 2024 |
| J.Mettiäinen Oy | Construction | 2021 |
| JDM Media Oy | Information & communication | 2015 |
| JK Laatu Oy | Construction | 2019 |
| JK Sähköasennus OY | Construction | 2020 |
| JM-Properties Oy | Real estate | 2015 |
| JMR-Comp Oy | Wholesale & retail | 2003 |
| JNP-Rakennus Oy | Construction | 2017 |
| JTN Consulting Oy | Energy | 2013 |
| JVOL Oy Ab | Wholesale & retail | 2017 |
| JaWell-koti Oy | Construction | 2010 |
| Jaakko Riekki Oy | Construction | 1989 |
| Jaakon Huolto Oy | Other services | 2020 |
| JanneKi Oy | Construction | 2023 |
| JapaNixi Oy | Information & communication | 2019 |
| Jo-Han Masina Oy | Wholesale & retail | 1995 |
| JoVel Rakennus Oy | Construction | 2020 |
| Jonas Entertainment Ab Oy | Information & communication | 2020 |
| Jukka Forssén Ky | Wholesale & retail | 1985 |
| K Oy Pater 12 | Financial services | 2020 |
| K&R Rakennuspalvelut Oy | Construction | 2018 |
| K.Heimola & Co Oy | Transport & logistics | 1987 |
| Kiinteistö OY Kukkian Sananjalka | Real estate | 2006 |
| Kouluttajakollektiivi Opeapu Avoin Yhtiö | Education | 2011 |
| KRN OÜ, sivuliike Suomessa | Construction | 2018 |
| KT Leads Oy | Wholesale & retail | 2026 |
| KalSuo Oy | Professional & scientific | 2020 |
| Kala Partners Oy | Financial services | 2020 |
| Kalemark Oy | Manufacturing | 1991 |
| Kalliorinteen kotitila Oy | Agriculture & fishing | 2025 |
| Kamtek Oy | Wholesale & retail | 1988 |
| Kamula Invest Oy | Real estate | 2018 |
| Kanta-Hämeen Saneeraus ja Maalaus Oy | Construction | 2020 |
| Kari Markku Tapio Ky | Transport & logistics | 2020 |
| Kariniemi Farms Oy | Agriculture & fishing | 2025 |
| Kate-Ässät Oy | Construction | 2018 |
| Kattainen Capital Oy | Financial services | 2022 |
| Keittiömesta Oy | Hospitality | 1985 |
| Kerila Rakennus & Remontti Oy | Construction | 2020 |
| Kiiltotukku Oy | Wholesale & retail | 2015 |
| Kiinteistö Oy Aurinkoharju | Real estate | 2009 |
| Kiinteistö Oy Avainkierto 11 | Real estate | 2010 |
| Kiinteistö Oy Avainkierto 13 | Real estate | 2013 |
| Kiinteistö Oy Avainkierto 7 | Real estate | 2014 |
| Kiinteistö Oy Hellas | Real estate | 1940 |
| Kiinteistö Oy Nurmijärven Matkuntie 1 | Real estate | 2003 |
| Kiinteistö Oy Perämatkuntie 3 | Real estate | 2005 |
| Kiinteistö Oy Posion Salmela | Real estate | 2006 |
| Kiinteistö Oy Puhkulma | Real estate | 1989 |
| Kiinteistö Oy Siitolankatu 1 | Real estate | 1972 |
| Kiinteistö- ja sijoitusosakeyhtiö Monte Carlo | Financial services | 2004 |
| Kiinteistöosakeyhtiö Herrankukkaro | Real estate | 2002 |
| Kiitosimeon Oy | Transport & logistics | 1983 |
| Kimpuu Oy | Construction | 2022 |
| Kinkero Oy | Transport & logistics | 2020 |
| Kite- Palvelut Oy | Real estate | 2024 |
| Kivimies Invest Oy | Financial services | 2026 |
| Klaus Sivén Oy | Real estate | 1995 |
| Koneurakointi JTR Oy | Construction | 2022 |
| Kotiapu Kimalle avoin yhtiö | Administrative & support | 2015 |
| Kotiapu ja hoivapalvelut Isla Oy | Health & social care | 2020 |
| Kuljetus A. Eerikäinen Oy | Transport & logistics | 1983 |
| Kuljetus J. Kivi Oy | Transport & logistics | 2007 |
| Kuljetusliike Lasse Pöysti Ky | Transport & logistics | 1981 |