| Kiinteistö Oy Kanavakulma | Real estate | 1979 |
| Kiinteistö Oy Kuukkeli II | Real estate | 1989 |
| Kiinteistö Oy Leluko | Real estate | 1994 |
| Kiinteistö Oy Tenonperho | Real estate | 1977 |
| Kiinteistö Oy Vehkoo | Real estate | 2023 |
| Kiinteistö Oy Vähäkuja 2 | Real estate | 1991 |
| Kiinteistönuohous Mielonen Ky | Administrative & support | 2002 |
| Kiinteistöosakeyhtiö Vehkoon Automaalaus | Real estate | 2006 |
| Kiinteistöpalvelu Pihlajapuu Oy | Professional & scientific | 2020 |
| Kisu-Misu Group Oy | Wholesale & retail | 2025 |
| Kolmas Askele Oy | Professional & scientific | 2021 |
| Kommandiittiyhtiö Printti Pirtti | Manufacturing | 1982 |
| Kone Kivistö Oy | Wholesale & retail | 2011 |
| Koneurakointi Saarinen Oy | Construction | 2022 |
| Korjaamo Tähkänen Ky | Wholesale & retail | 1987 |
| Kotari Oy | Real estate | 1992 |
| Kuljetusliike Kungas Ky | Transport & logistics | 1984 |
| KumTrading Ky | Wholesale & retail | 2017 |
| Kuntavelho Oy | Professional & scientific | 2016 |
| Kuppivuori Oy | Water & waste | 1997 |
| Ky Helka Wahlsten | Wholesale & retail | 1985 |
| LCW Data Oy | Information & communication | 2020 |
| LVA Oy | Wholesale & retail | 2021 |
| LVI Salpa ky | Construction | 2014 |
| Laaksosen Ovi ja Ikkuna Oy | Manufacturing | 1994 |
| Laastimaa Oy | Construction | 2025 |
| Lahden Katto ja Puurakenne Oy | Construction | 2021 |
| Lahden Konepaja Oy | Manufacturing | 1997 |
| Lahden Kylmätekniikka Oy | Manufacturing | 1989 |
| Lahden Puurakenne Oy | Construction | 2022 |
| Lahden Väriasemointi Oy | Wholesale & retail | 1993 |
| Lahen Pääty Oy | Hospitality | 2022 |
| Laki- ja veroasiat J. Kannisto Ky | Professional & scientific | 2004 |
| Lakiasiaintoimisto AALTO OY | Professional & scientific | 2014 |
| Lammin SK Center Oy | Wholesale & retail | 1994 |
| Larakon Oy | Professional & scientific | 2025 |
| Lauttaniemen Teollisuus Oy | Manufacturing | 1975 |
| Lauttaniemi Oy | Professional & scientific | 2004 |
| Lehtorannan Puutarha Oy | Agriculture & fishing | 1961 |
| Leijonatorni Oy | Administrative & support | 2012 |
| Liikuntai Oy | Wholesale & retail | 2020 |
| Lisker Oy | Information & communication | 2021 |
| Lisker Sijoitus Oy | Financial services | 2021 |
| Lomareissu Oy | Administrative & support | 2020 |
| Luoma Group Oy | Financial services | 2024 |
| Luomatec Oy | Manufacturing | 2016 |
| Lvi-urakointi E & H Laurell Oy | Construction | 2002 |
| Länsipaino Ky | Manufacturing | 1967 |
| MKV Productions Oy | Information & communication | 2025 |
| MR-Tuotanto Oy | Wholesale & retail | 2009 |
| Maalausliike Hyry Oy | Construction | 2019 |
| Maanrakenne Viikilä Ky | Construction | 1975 |
| Majakkapaviljonki Oy | Wholesale & retail | 1988 |
| Markkinapuoti Ky | Wholesale & retail | 1991 |
| Markkinointi Eurosincos Oy | Wholesale & retail | 1995 |
| Marttiini Oy | Manufacturing | 1961 |
| Mattelmäki & Verkka Oy | Financial services | 2008 |
| Matti Riekki Oy | Professional & scientific | 1994 |
| Mattiovi Oy | Manufacturing | 1985 |
| Mentorium Oy | Education | 2023 |
| Mesila Games Oy | Manufacturing | 2018 |
| Metsäkonepalvelu Risto Borén Oy | Agriculture & fishing | 1994 |
| Metsänhoito ja kotipalvelu Niittylä Avoin yhtiö | Agriculture & fishing | 2010 |
| Mikko Engberg Ky | Construction | 1984 |
| Minico Consulting Oy | Professional & scientific | 1989 |
| Mobus Ky | Transport & logistics | 2001 |
| Monta Rautaa Oy | Administrative & support | 2002 |
| Mäki & Koivula Oy | Transport & logistics | 2016 |
| NKJ-Yhtiöt Oy | Manufacturing | 2011 |
| NOPE OY Pohjoisen potilasvarustelu Oy North Patient Equipment ltd | Manufacturing | 2020 |
| Navox Oy | Real estate | 2020 |
| Nelicamp Oy | Financial services | 1989 |
| Niworg Holdings Oy | Information & communication | 2018 |
| Normako Oy | Wholesale & retail | 2005 |
| Northern Green Fuels Oy | Manufacturing | 2023 |
| Numari Invest Oy | Financial services | 2018 |
| OP Koti Järvi-Häme Oy LKV | Real estate | 1984 |
| OPy-Quality Oy | Professional & scientific | 2026 |
| OS Infra Oy | Construction | 2026 |
| Oiinas Kebab Oy | Hospitality | 2011 |
| Olavi Investments Oy | Financial services | 2021 |
| Optimaatti-Laitteet Ky | Manufacturing | 1989 |
| Ottikone Oy | Manufacturing | 2011 |
| Oulun Laki ja Notariaatti Oy | Financial services | 2004 |
| Oy Finnmedicus Ab | Health & social care | 1991 |
| Oy Mafoka Ab | Wholesale & retail | 1975 |
| PH-Pienkone Oy | Manufacturing | 2025 |
| PKA Auto Homes ky | Manufacturing | 1988 |
| Padasjoen Asuntotalot Oy | Real estate | 1992 |
| Pakkanen Group Oy | Construction | 1966 |
| Palatec Oy | Wholesale & retail | 1979 |
| Palkkatakomo Oy | Professional & scientific | 2021 |
| Perhekoti Mini Oy | Health & social care | 2026 |
| Pienryhmäkoti Helmi Oy | Health & social care | 2005 |
| Pilot Group Oy AB | Transport & logistics | 2024 |
| Plastvo Oy | Manufacturing | 2012 |
| Pohjolan Luonto ja Kala Oy | Wholesale & retail | 2002 |
| Priweco Oy | Manufacturing | 2013 |
| Päijät-Hämeen Autohuolto Oy | Other services | 2017 |
| Päijät-Hämeen Kiinteistönotariaatti Oy | Real estate | 2010 |