| Kiinteistö Oy Jyväskylän Nuutti | Real estate | 2009 |
| Kiinteistö Oy Lajula | Real estate | 2012 |
| Kiinteistö Oy Macrum | Real estate | 1988 |
| Kiinteistö Oy Palokan Kirrinpolku 2 | Real estate | 1988 |
| Kiinteistö Oy Parkanon Torinkulma | Real estate | 2003 |
| Kiinteistö Oy Seinäjoen Tehtaantie 6C | Real estate | 2023 |
| Kiinteistö Oy Utsjoen Lompolo | Real estate | 1994 |
| Kiinteistö oy Jokelantie 1 | Real estate | 2013 |
| Kiinteistöhallinto Vanamo Oy | Professional & scientific | 2023 |
| Kiinteistöosakeyhtiö Piilolan Tonttukoto | Real estate | 1998 |
| Kimmo Haka Oy | Professional & scientific | 2025 |
| Kinnova Oy | Professional & scientific | 2026 |
| Kinnu family Oy | Professional & scientific | 2025 |
| Kitera Oy | Hospitality | 2006 |
| Komeetta Holding Oy | Financial services | 2018 |
| Kommandiittiyhtiö Päättymätön Tarina | Health & social care | 2005 |
| Koulutustiimi ViisiPäivää Ky | Professional & scientific | 2010 |
| KroApart Oy | Real estate | 2021 |
| Ksteel Oy | Wholesale & retail | 2014 |
| Kuljetus Kansanaho Oy | Transport & logistics | 2001 |
| Kuljetuspalvelut J. Vidgren Oy | Transport & logistics | 2020 |
| Kuntosali Reikku's Gym Ky | Arts & recreation | 1989 |
| Kuntoutus T P J Oy | Health & social care | 2019 |
| Kuormaus ja Raivaus Perälä Oy | Construction | 1959 |
| Käpälämäen Proteesipalvelu Oy | Manufacturing | 2015 |
| LA-Pinta Ky. Pekka Lahti | Construction | 1979 |
| LClean Ky | Administrative & support | 2016 |
| Lion-Wood OY | Manufacturing | 2020 |
| LPS Capital Oy | Professional & scientific | 2025 |
| LVI-Time-On Oy | Professional & scientific | 2015 |
| LVI-Tirronen&Jormakka Oy | Construction | 2011 |
| Laatuhoiva Oy | Health & social care | 2012 |
| Laitehuolto Juha Isrikki Ky | Manufacturing | 1992 |
| Laitehuolto Matti Niininen Ky | Manufacturing | 1991 |
| Lasirakki Oy | Construction | 2021 |
| Laskentapari Oy | Professional & scientific | 1994 |
| Lauhkea Oy | Construction | 2022 |
| Laurinvest Oy | Financial services | 2021 |
| Lehi Holdings Oy | Professional & scientific | 2018 |
| Lehti Capital Oy | Financial services | 2026 |
| Lenfeld Consulting Oy | Professional & scientific | 2024 |
| Leos2go Oy | Professional & scientific | 2019 |
| Lepto Oy | Professional & scientific | 2023 |
| Lilla Nel tukkuliike Avoin Yhtiö | Wholesale & retail | 2008 |
| Linmate Oy | Professional & scientific | 2026 |
| Linpure Finland Oy | Professional & scientific | 2025 |
| Lintukankaan Kyläverkko Oy | Information & communication | 2019 |
| Liv LKV Oy | Real estate | 2014 |
| Logistiikkapalvelut Tuderus Oy | Transport & logistics | 2020 |
| Lohkare Games Oy | Information & communication | 2024 |
| Loistoset Oy | Construction | 2010 |
| Louhinta- ja Rakenne Oy Lehto | Construction | 1976 |
| LumiBro oy | Wholesale & retail | 2011 |
| Lämpö-Valli Oy | Construction | 2011 |
| Lämpömesta Oy | Real estate | 1994 |
| M Ollin Talousturva Oy | Professional & scientific | 1996 |
| MAKRENT Oy | Real estate | 2003 |
| ML Racing Oy | Administrative & support | 2024 |
| MLDent Ky | Manufacturing | 2009 |
| Monitoimi Tja OY | Construction | 2018 |
| Maalausliike Laatumaalaus Oy | Professional & scientific | 2026 |
| Maanrakennus Petri Junttila Ky | Construction | 2006 |
| Maaseudun Vesitekniikka Oy | Professional & scientific | 1990 |
| Maco Group Oy | Construction | 2024 |
| Madala Investments Oy | Real estate | 2022 |
| Maha Invest Oy | Financial services | 2025 |
| Mahdi Soltani Oy | Hospitality | 2020 |
| Makiatech Oy | Professional & scientific | 2024 |
| ManuLab Oy | Other services | 2024 |
| Marelko Oy | Professional & scientific | 2008 |
| Markkinointi Vesa Malin Ky | Wholesale & retail | 2014 |
| MarkkinointiMeklari Oy | Professional & scientific | 2025 |
| Markkio Oy | Professional & scientific | 2022 |
| Maya Wellness Oy | Arts & recreation | 2025 |
| Mbravo Oy | Wholesale & retail | 2010 |
| MedSurg Oy | Health & social care | 2021 |
| MediTukku Oy | Wholesale & retail | 2019 |
| Medivak OY | Health & social care | 2016 |
| Melbourne Rose Oy | Hospitality | 2015 |
| Melli EcoDesign Oy | Manufacturing | 2017 |
| Melume Oy | Financial services | 2017 |
| Merrak Oy | Construction | 1995 |
| MetalNetwork Oy | Wholesale & retail | 2007 |
| Metsäkiinteistöt Oksala Oy | Real estate | 2024 |
| Metsäkone- ja Maarakennusurakointi M&L Oy | Agriculture & fishing | 2007 |
| Mmx Solutions Oy | Information & communication | 2023 |
| Modiqo Group Oy | Wholesale & retail | 2020 |
| Monexmedia Oy | Manufacturing | 2004 |
| Multi Service Simonen Oy | Other services | 2026 |
| MultiPaperi Finland Oy | Wholesale & retail | 2009 |
| MuoVille Oy | Manufacturing | 2020 |
| MusaTiimi Oy | Professional & scientific | 2018 |
| Musamagia Oy | Information & communication | 2012 |
| Musiikkikoulu PiaCello Oy | Education | 2014 |
| Musta RD Oy | Information & communication | 2021 |
| Mustanranta Oy | Real estate | 1998 |
| Muuramen Star Invest Oy | Construction | 2015 |
| Muuraus ja rakennus Hämäläinen Oy | Construction | 2021 |
| Myllyoja Palokka avoin yhtiö | Professional & scientific | 2005 |
| Nash OY | Professional & scientific | 2020 |