| A&K Tawastia Oy | Professional & scientific | 2010 |
| AE Transport Oy | Transport & logistics | 2024 |
| AIK Invest Oy | Wholesale & retail | 2026 |
| AJ Talot Oy | Construction | 2021 |
| AVR Import Oy | Wholesale & retail | 2017 |
| Aallonmurtaja Coaching Oy | Education | 2021 |
| Ahosten Oy | Construction | 2018 |
| Aku ja Ville Oy | Manufacturing | 2009 |
| Anumati Naturals Oy | Wholesale & retail | 2015 |
| Aquarium Investment Oy | Financial services | 2017 |
| Article Compliance Oy | Professional & scientific | 2021 |
| Arto Viljanen Oy | Professional & scientific | 2000 |
| Arvon palvelu Oy | Professional & scientific | 2026 |
| Asennus M Lehtiö Oy | Construction | 2021 |
| Atast Invest Oy | Financial services | 2013 |
| AutoAway Europe Oy | Wholesale & retail | 2018 |
| Automaattihuolto Päivinen Oy | Other services | 1997 |
| Avide Hattula Oy | Wholesale & retail | 2006 |
| BLRT Invest Finland Oy | Wholesale & retail | 2010 |
| BN Consulting Oy | Professional & scientific | 1995 |
| BeU Finland Oy | Wholesale & retail | 2019 |
| CR-Express Ky | Transport & logistics | 2004 |
| Camini Kanta-Häme Oy | Administrative & support | 2012 |
| Concordo Oy | Education | 2025 |
| DPFPRO Oy | Other services | 2018 |
| Dick Nova Oy | Financial services | 2000 |
| Easell Oy | Information & communication | 2025 |
| Edoc Oy | Information & communication | 2023 |
| EeTee Oy | Wholesale & retail | 2017 |
| Elme Metall Finland Oy | Wholesale & retail | 2018 |
| Epicentrum Oy | Other services | 2022 |
| Erdal Invest Oy | Hospitality | 2019 |
| Fin-Blossom Oy | Professional & scientific | 2024 |
| FinCaara Oy | Wholesale & retail | 2021 |
| Finstaller Oy | Construction | 2018 |
| Forss ky | Administrative & support | 1980 |
| Forville Oy | Construction | 2019 |
| GoingUp Oy | Health & social care | 2024 |
| GoldPartners Finland Oy | Administrative & support | 2023 |
| HANZA Assembly Parola Oy | Manufacturing | 2017 |
| HANZA Kanungin Karhu Oy | Real estate | 2018 |
| HairMuse Oy | Manufacturing | 1995 |
| Harmainen-Yhtiöt Oy | Professional & scientific | 2011 |
| Hattula Golf Oy | Arts & recreation | 1998 |
| Hattulan Hirsi Oy | Manufacturing | 1996 |
| Hattulan Holvi Oy | Real estate | 2024 |
| Hattulan Kuntokeskus Oy | Arts & recreation | 2015 |
| Hattulan Pienkone- ja Venehuolto Oy | Other services | 1993 |
| Hattulan Remonttipalvelut Oy | Construction | 2014 |
| Hattulan Sairaankuljetus Oy | Health & social care | 1980 |
| Hattulan Saneerauskeskus Oy | Construction | 1997 |
| Hattulan Taksipalvelu Oy | Transport & logistics | 2021 |
| Hatusen Liiketilat Oy | Wholesale & retail | 1990 |
| Hermanni-Talot Oy | Construction | 2017 |
| Hindex Oy | Transport & logistics | 2024 |
| Hitsausliike Heikkilä Oy | Construction | 1983 |
| Hydrosofist Oy | Professional & scientific | 2026 |
| Hymyilevät Taksimiehet Oy | Transport & logistics | 2021 |
| HämePro Oy | Real estate | 2026 |
| Hämeen Asbestipurku Oy | Construction | 2006 |
| Hämeen Asennustyö Oy | Manufacturing | 2013 |
| Hämeen Lähikiito Oy | Transport & logistics | 2013 |
| Hämeen Maalikunkku Oy | Construction | 2026 |
| Hämeen Paperituote Ky | Wholesale & retail | 1999 |
| Hämeen Rakennussuunnittelu Oy | Professional & scientific | 1986 |
| Hämeen Remonttitiimi Oy | Construction | 2008 |
| Hämeen Trukkihuolto Oy | Manufacturing | 2002 |
| Hämeen VA-kone Oy | Wholesale & retail | 1995 |
| Hämeenlinnan OF-Koti Oy | Real estate | 2004 |
| Hämeenlinnan maalaus- ja mattotyö oy | Construction | 2024 |
| Insinööritoimisto Hukkavahti OY | Professional & scientific | 2011 |
| Ilkka Porvari Oy | Manufacturing | 1990 |
| Indusplan Oy | Manufacturing | 2024 |
| Insinööritoimisto Hallenberg Oy | Professional & scientific | 2011 |
| Isännöitsijätoimisto Pohjola Oy | Real estate | 1990 |
| J.P.-Teollisuuskiinteistö Oy | Real estate | 1983 |
| J.Rumbin Oy | Other services | 2024 |
| JKCars Oy | Wholesale & retail | 2024 |
| JLA huolto Oy | Other services | 2025 |
| JM-Murske Oy | Wholesale & retail | 2021 |
| JPK Trading Oy | Health & social care | 2012 |
| JS-Vet Oy | Professional & scientific | 2024 |
| JTG Import Oy | Wholesale & retail | 2019 |
| JV-LVI Tekniikka Oy | Real estate | 2021 |
| JavPro Oy | Construction | 2010 |
| Jesara Oy | Wholesale & retail | 2018 |
| JiiJii Invest Oy | Financial services | 2025 |
| Jomerak Oy | Construction | 2019 |
| JouCon Oy | Administrative & support | 2009 |
| Jukka Haantaus Oy | Construction | 2013 |
| Juupajoen Yrityspalvelu Oy | Professional & scientific | 1991 |
| Keikka-Orava OY | Transport & logistics | 2020 |
| Kiinteistöyhtiö Vainionpää OY | Real estate | 2013 |
| KL Mining Oy | Information & communication | 2018 |
| KL-kiinteistöt Oy | Real estate | 1991 |
| KOY Laajamäentie 4 | Real estate | 2021 |
| KP Works OY | Administrative & support | 2025 |
| KR Company oy | Hospitality | 2024 |
| Kaiku training Oy | Education | 2021 |
| Kalastuskolmio Oy | Wholesale & retail | 1986 |