| 1445 E ja K Huhtimo Oy | Wholesale & retail | 2015 |
| Adene Oy | Manufacturing | 1992 |
| Ala-Hämeen Konsultointi Oy | Professional & scientific | 1990 |
| Alman Siivous Oy | Administrative & support | 2024 |
| Arinno Oy | Professional & scientific | 2016 |
| Arto Säteri Ky | Transport & logistics | 1991 |
| Autokorjaamo R. Niemi Ky | Other services | 1979 |
| Banderem DE Oy | Other services | 2023 |
| BeLegally Oy | Professional & scientific | 2020 |
| Benders Oitti Koy | Real estate | 2023 |
| Benders Suomi Oy | Wholesale & retail | 1998 |
| CD-Con Oy | Information & communication | 1992 |
| Ceiccon Oy | Wholesale & retail | 2023 |
| Chilltek Oy | Construction | 2026 |
| Creonova Oy | Professional & scientific | 1997 |
| Decoitti Oy | Other services | 2008 |
| Delego Service Oy | Water & waste | 2014 |
| EL-WELL Oy | Manufacturing | 2021 |
| Eerikäisen Liikenne O. Eerikäinen Oy | Transport & logistics | 2015 |
| Erosen Vuokrauspalvelu Oy | Administrative & support | 2025 |
| EtelänSäilytysVerstas Oy | Transport & logistics | 2021 |
| Eurmec Oy | Wholesale & retail | 1990 |
| Eurocon Oy | Manufacturing | 1985 |
| Everem Oy | Construction | 2025 |
| Evon Retki Oy | Administrative & support | 2023 |
| Farmilomat Oy | Agriculture & fishing | 2008 |
| Fixrem Oy | Construction | 2015 |
| FoodFarm Oy | Wholesale & retail | 2020 |
| Freedom Factory Oy | Administrative & support | 2013 |
| Frontline Promotions Oy | Professional & scientific | 2025 |
| Goodmer Oy | Transport & logistics | 2004 |
| H&M Rakennuspalvelut Oy | Construction | 2025 |
| HT-Maanrakennus Oy | Administrative & support | 1997 |
| Hausjärven Fysikaalinen Hoitolaitos Ky | Health & social care | 1984 |
| Hausjärven Kaluste Oy | Manufacturing | 1984 |
| Hausjärven Niklandia Oy | Administrative & support | 2004 |
| Hausjärven Tilitoimisto Oy | Professional & scientific | 1976 |
| Hellurej Ky | Administrative & support | 2007 |
| Herba Fulgens Oy | Professional & scientific | 2023 |
| Huonekalukorjaamo Viljakainen Oy | Other services | 2011 |
| Huru-Ukko Oy | Construction | 2013 |
| I.F.W. Oy Furniture World Ltd | Manufacturing | 2002 |
| Iconsteel Oy | Manufacturing | 2012 |
| Ilonagentti Oy | Education | 2026 |
| Insinööritoimisto NC-Tapio Oy | Manufacturing | 2001 |
| JOB-ri Ky | Administrative & support | 2011 |
| Janakkalan Säästökulma Oy | Administrative & support | 2009 |
| Jrcool Oy | Construction | 2024 |
| Karhu & Sons Oy | Health & social care | 2013 |
| Kiinteistö Oy Oitin Ojantaka | Real estate | 2005 |
| Kiinteistöosakeyhtiö Viidenmaa | Real estate | 1984 |
| Kiinteistöpalvelu Muntila Oy | Professional & scientific | 1991 |
| Kivinummen Kuljetus Oy | Transport & logistics | 2004 |
| Konetyöt Koskela Ky | Mining & quarrying | 1991 |
| Koti- ja hoivapalvelut Murtolehto Oy | Health & social care | 2020 |
| Kukkahaus ja Hautaus Oy | Other services | 2004 |
| Kuljetus Heikki Eerikäinen Oy | Transport & logistics | 2015 |
| Kuljetus J. Lähde Oy | Transport & logistics | 2019 |
| Kuljetus Lasse Tuominen Oy | Transport & logistics | 2019 |
| Kuljetus M & S Perttula Ky | Transport & logistics | 2004 |
| Kultainen Farmi Oy | Manufacturing | 2020 |
| Lahtisen Vahavalimo Ky | Wholesale & retail | 1990 |
| Lakiasiaintoimisto Jyrki Miettunen, avoin yhtiö | Professional & scientific | 1994 |
| Lakitoimisto Vedinor Oy | Professional & scientific | 2020 |
| Lanko-Tuote OY | Wholesale & retail | 2024 |
| Lasercoat Oy | Wholesale & retail | 1995 |
| Lastenpuoti Nunnu Oy | Wholesale & retail | 1988 |
| ML-Invest Oy | Real estate | 1988 |
| MMM Kuljetus Oy | Transport & logistics | 2017 |
| Maanrakennus ja Mittaus Säteri Oy | Professional & scientific | 2016 |
| Maanrakennus-PJT Oy | Administrative & support | 1990 |
| Maatero Oy | Construction | 1997 |
| Mainosvälinehuolto Ky Tuohino | Construction | 1986 |
| Malvitek Oy | Construction | 2019 |
| Markkinointi Niklander Oy | Wholesale & retail | 2011 |
| Mattopalvelu Liljavirta Oy | Other services | 2011 |
| Max Way Oy | Transport & logistics | 2020 |
| Medusa Production Oy | Information & communication | 1996 |
| Metsi Group Oy | Professional & scientific | 2009 |
| Metsi Oy | Manufacturing | 1968 |
| Milagos Oy | Wholesale & retail | 1993 |
| Naturbee Ky | Wholesale & retail | 1986 |
| Naukkailevi Oy | Real estate | 1989 |
| Oitin LVI-Asennus Oy | Construction | 1990 |
| Oitin Liikekeskus Oy | Real estate | 2007 |
| Oitin Valu Oy | Manufacturing | 1994 |
| Oitinmäen Lämpö Oy | Energy | 1980 |
| Oitti Tools Oy | Manufacturing | 2008 |
| Osuuskunta Maakunnan Hunaja | Agriculture & fishing | 2006 |
| Oy Crazy Ab | Wholesale & retail | 2019 |
| Oy East Trade Promotion Ltd | Professional & scientific | 1994 |
| PFC English OY Ltd | Education | 1989 |
| Paanti Oy | Manufacturing | 2006 |
| Palveluneliö Oy | Health & social care | 2004 |
| Pelti Viljakainen Oy | Construction | 1986 |
| Peltityö Pekka Sointula Oy | Construction | 2003 |
| Peltivartiainen Ky | Construction | 1985 |
| Pentti Ruponen Ky | Agriculture & fishing | 1983 |
| Pesulan Tila Oy | Agriculture & fishing | 2025 |
| Pohjanmaan Lava Ky | Manufacturing | 1991 |