| 1071 Eikku Tammisto Oy | Wholesale & retail | 2014 |
| A.H-Lift Oy | Administrative & support | 2006 |
| Agri Heikkilä Oy | Agriculture & fishing | 2024 |
| Ahomäen tila Oy | Agriculture & fishing | 2020 |
| Allofots Oy | Real estate | 1994 |
| Aseliike Veljekset Koivula Oy | Wholesale & retail | 2013 |
| Asko Liuhala Oy | Transport & logistics | 2006 |
| Asma Oy | Transport & logistics | 2007 |
| Automaalaamo Helin Oy | Other services | 1985 |
| Avoin yhtiö Humppilan Vepa | Construction | 1992 |
| Avoin yhtiö, Kässähäärän kammari | Manufacturing | 2017 |
| Bio Suomi Oy | Wholesale & retail | 2008 |
| CC Tax Free Oy | Wholesale & retail | 1989 |
| Caarimaa Oy | Real estate | 1989 |
| Cardetta Oy | Wholesale & retail | 1999 |
| DeliSis Oy | Hospitality | 2012 |
| E.Linnala Sijoitus Oy | Hospitality | 2006 |
| Emgo Oy | Hospitality | 2025 |
| Etocon Oy | Professional & scientific | 2012 |
| FOHU Oy | Other services | 2024 |
| Foncon Oy | Real estate | 2019 |
| Forever Suomi Oy | Wholesale & retail | 2016 |
| Forssan IV-osa Kuosmanen & Oras | Manufacturing | 1986 |
| Forssan Ilona Holding Oy | Professional & scientific | 2020 |
| Forssan Kaivopojat Ky | Construction | 1977 |
| HH-Infra Oy | Construction | 2023 |
| HM-Kiinteistöt Oy | Real estate | 1990 |
| Haztech Ky | Other services | 2002 |
| Holja Kiinteistötalkkarit oy | Administrative & support | 2022 |
| Holja Rakennuspalvelu Oy | Construction | 1995 |
| Honkamarkkinat Finland Oy | Construction | 1997 |
| Hukole Oy | Manufacturing | 1984 |
| Humppilan Auto ja Rengas Oy | Other services | 2010 |
| Humppilan Kaartotie 3 Oy | Real estate | 1985 |
| Humppilan Kaukolämpö Oy | Energy | 1994 |
| Humppilan Kiinteistöpalvelu Oy | Administrative & support | 1990 |
| Humppilan Masemetalli Oy | Manufacturing | 1987 |
| Humppilan Otsolanhovi Oy | Real estate | 2003 |
| Humppilan PIHLAJA Oy | Hospitality | 2020 |
| Humppilan Putkiasennus Oy | Construction | 2011 |
| Humppilan Rivitalot Oy | Real estate | 1974 |
| Humppilan Varaosamyynti Kommandiittiyhtiö | Wholesale & retail | 1983 |
| Humppilan Vesihuolto Oy | Water & waste | 1964 |
| Ibamic Oy | Wholesale & retail | 2001 |
| J. Heikkilän Korjaamo Oy | Manufacturing | 2003 |
| JS-AllWorks OY | Construction | 2022 |
| JTt Kantatila Oy | Financial services | 1987 |
| Jokioisten Kotikiinteistö oy | Real estate | 1992 |
| Joratek Oy | Construction | 2022 |
| Josvest Oy | Real estate | 2004 |
| Jujas Oy | Wholesale & retail | 2021 |
| Juvan Tuonti Oy | Wholesale & retail | 1987 |
| K-K Industry OY | Construction | 2020 |
| KSK Asennus Oy | Manufacturing | 1999 |
| Kaisa.H. It-Apupalvelut OY | Information & communication | 2025 |
| KatjaMari, avoin yhtiö | Other services | 2005 |
| Kenkämaailma Oy | Wholesale & retail | 2004 |
| Kielotar Oy | Professional & scientific | 2008 |
| Kiinteistö Oy Humppilan Lasitorni | Real estate | 2001 |
| Kiinteistö Oy Humppilan Leppä | Real estate | 2025 |
| Kiinteistö Oy Humppilan Sahankulma | Real estate | 2002 |
| Kiinteistö Oy Humppilan Yritystie 4 | Real estate | 2000 |
| Kiinteistö Oy Kenkätalo | Real estate | 1989 |
| Kiinteistö Oy Metsolevi | Real estate | 2000 |
| Kiinteistö Oy Mädänniityn Portti | Real estate | 1994 |
| Kiinteistö Oy Orronkulma | Real estate | 2024 |
| Kirkkoharjun Lämpö Oy | Administrative & support | 1989 |
| Koneyhtymä Rämö Oy | Construction | 2006 |
| Kotipalvi Oy | Manufacturing | 1982 |
| Kuljetus Mika Haapala Ky | Transport & logistics | 1996 |
| LHN Tietopalvelu Oy | Professional & scientific | 2000 |
| Laavuvaara Oy | Manufacturing | 1978 |
| Lahjatorni Oy | Wholesale & retail | 2009 |
| Lounais-Hämeen Koneurakointi Oy | Construction | 1996 |
| M & K Palvelupiste Ky | Construction | 1996 |
| M&T Löyttymäki Oy | Construction | 2026 |
| MT-Tukku Oy | Wholesale & retail | 2022 |
| Maamax Oy | Real estate | 2020 |
| Maunu-Markkinointi Oy | Real estate | 1978 |
| Maviteknik Oy | Manufacturing | 1997 |
| Metsäpiste Oy | Agriculture & fishing | 2021 |
| MuTu-Systeemi Ky | Manufacturing | 2007 |
| Murskaus Rämö & Karén Osakeyhtiö | Construction | 2008 |
| Mäki Hirsitalot Oy | Manufacturing | 1988 |
| MäkiAuto Oy | Other services | 2019 |
| Nadirox Oy | Transport & logistics | 2005 |
| Onni Fysio Oy | Health & social care | 1983 |
| Osuuskunta Takuu-Pesti TP | Other services | 1994 |
| Otetta Oy | Wholesale & retail | 2008 |
| Oy Nantucket Ab | Information & communication | 1990 |
| Pekka Juhala Oy | Construction | 1998 |
| Pellavaputiikki Oy | Wholesale & retail | 2023 |
| PeuraWaara Oy | Wholesale & retail | 2019 |
| Proof Mestar Oy | Construction | 2014 |
| Putki-Ormetti Ky | Construction | 1987 |
| Putkiasennus Jorma Jokinen Oy | Construction | 1993 |
| Puusepänliike Tuulipuu avoin yhtiö | Manufacturing | 1997 |
| Rakennus ja Maalaus Salmi Ky | Construction | 2005 |
| Rakennussaneeraus Timo Huhti Oy | Construction | 2000 |
| Rasisen Tila Oy | Agriculture & fishing | 1992 |