| Laari Oy | Financial services | 2023 |
| Laari Trading Oy | Wholesale & retail | 2023 |
| Lahjat Kotiin Oy | Wholesale & retail | 2025 |
| Lakipalvelut Kajuutti Oy | Professional & scientific | 2026 |
| Laseron Oy | Wholesale & retail | 1992 |
| Lasisiipi Oy | Manufacturing | 2017 |
| Leimasinvalu Antti Hurme Kommandiittiyhtiö | Manufacturing | 1967 |
| Liiran Oy | Transport & logistics | 2021 |
| Linjalaser Oy | Manufacturing | 2000 |
| Linnapaperi Oy | Wholesale & retail | 1991 |
| Lintulan Puu Oy | Wholesale & retail | 1994 |
| Lisken Oy | Agriculture & fishing | 2026 |
| Lukko Maininki Ky | | 1992 |
| Lumus Oy | Financial services | 2024 |
| Lumuskodit Oy | Construction | 2020 |
| Lumustalot Oy | Construction | 2026 |
| Lunar Activities Oy | Information & communication | 2021 |
| Lvi Jyke Oy | Construction | 2019 |
| Lämminmäki Oy | Wholesale & retail | 2010 |
| M-Cab Kuriiri Oy | Transport & logistics | 1996 |
| MJ Hämäläinen Ky | Wholesale & retail | 2012 |
| MNKO Oy | Wholesale & retail | 2024 |
| Maanrakennus Veljekset Boman | Construction | 2000 |
| Maasalo Consulting Oy | Construction | 2025 |
| Matios Oy | Financial services | 1999 |
| Matka Mäkelä Oy | Transport & logistics | 1992 |
| Matricomp Oy | Professional & scientific | 2015 |
| Mauno Koskinen ky | Transport & logistics | 1989 |
| Mediayhtiö Kvaak! Oy | Professional & scientific | 2026 |
| Merkkimiehet Oy | Manufacturing | 1988 |
| Mesilintu Oy | Wholesale & retail | 2024 |
| Mesira Oy | Manufacturing | 2009 |
| Miia Eerika Equine Oy | Education | 2026 |
| Miia Sieppi Ky | Other services | 2011 |
| Mikin Kone Ky Keuruu | Wholesale & retail | 1986 |
| Millemix Oy | Professional & scientific | 1989 |
| Minestrone Oy | Real estate | 1994 |
| Minna Kajuutti Oy | Professional & scientific | 2019 |
| Multian Vuokra-asunnot Oy | Real estate | 1992 |
| Muuvari Oy | Transport & logistics | 2023 |
| Needsal Oy | Wholesale & retail | 2013 |
| Nelimarkan Invest Oy | Real estate | 1989 |
| Nenonen Invest Oy | Financial services | 2016 |
| Nikolaintalo Ventures Oy | Professional & scientific | 2012 |
| Northern Wind Ky | Professional & scientific | 1989 |
| Nortig Oy | Manufacturing | 2017 |
| Nyyssis Oy | Hospitality | 2007 |
| OK-Yhtiöt Oy | Agriculture & fishing | 2007 |
| Olika Oy | Wholesale & retail | 2012 |
| Optikko Kuoppamäki Oy | Wholesale & retail | 2004 |
| Oratera Oy | Health & social care | 2014 |
| Osjatec Oy | Professional & scientific | 2023 |
| Oy HT Engineering Ltd. | Manufacturing | 1987 |
| Oy Pyörremyrsky AV | Wholesale & retail | 2011 |
| Oy Sound Import Ab | Wholesale & retail | 1989 |
| P3nsionBook Oy | Information & communication | 2021 |
| PAJ Capital Oy | Real estate | 2021 |
| PE Holding Oy | Administrative & support | 2021 |
| Porac OY | Construction | 2017 |
| PRN Ruhta Oy | Professional & scientific | 2016 |
| Papinaho Oy | Transport & logistics | 1985 |
| Parturi-Kampaamo Aihos Ky | Other services | 1990 |
| Parturi-Kampaamo Keuruun Hiushuone Duo avoin yhtiö | Other services | 1999 |
| Perhekoti Hima Oy | Health & social care | 2017 |
| Perhepalvelut Syli Oy | Other services | 2024 |
| Perttulan Kuljetus Oy | Transport & logistics | 1984 |
| Pesukämmen Avoin yhtiö | Other services | 1979 |
| Petri Nuotio Oy | Professional & scientific | 2015 |
| Pihka Holding Oy | Real estate | 2023 |
| Pizzeria Lara Avoin yhtiö | Hospitality | 2021 |
| Pläkisport Oy | Education | 2026 |
| Pohjola Consulting Oy | Wholesale & retail | 1994 |
| Ponilaakso Oy | Arts & recreation | 2006 |
| Porido Oy | Real estate | 1997 |
| Promicco Oy | Manufacturing | 2010 |
| Propit Oy | Other services | 2021 |
| PsycheMedics Oy | Health & social care | 2023 |
| Puhallusliiga Oy | Wholesale & retail | 2009 |
| Puusepänliike Vipula Ky | Construction | 1994 |
| RD Virkamaankatu Fastighets Ab | Real estate | 2020 |
| RIXRAX Ky | Construction | 2016 |
| Radiki Oy | Manufacturing | 1978 |
| Rahikkalan Tila Oy | Agriculture & fishing | 2010 |
| RaiRac Oy | Professional & scientific | 2020 |
| Railway Systems Finland oy | Construction | 2025 |
| RakSara Oy | Construction | 2020 |
| Rakennus K. Kallio Ky | Construction | 1991 |
| Rakennusinsinööritoimisto M Kanko Ky | Professional & scientific | 2005 |
| Rakennusliike JT-Haapala Ky | Construction | 1999 |
| Rakennusliike M Mäkinen Oy | Construction | 1997 |
| Rakennusliike MSAK-Asennus Oy | Construction | 2022 |
| Rakennusliike Viinikka Ky | Construction | 1986 |
| Rakennuspalvelu Rahikainen Oy | Construction | 2022 |
| Rakennussuunnittelu Laajavaara Avoin yhtiö | Professional & scientific | 2000 |
| Rakennustyö Jokitalo Oy | Construction | 2023 |
| Rakennustyö Pessinen Oy | Construction | 2017 |
| RantaGolf Oy | Arts & recreation | 2025 |
| Rata58 Oy | Arts & recreation | 2025 |
| Rauta-Maatalous Marko Kuoppala Oy | Wholesale & retail | 2006 |
| Remonttipalvelu Jani Ky | Construction | 2016 |