| Logistiikka ValtaVirta Oy | Construction | 1981 |
| Lujabetoni Jyväskylä Oy | Manufacturing | 2025 |
| Lujabetoni Oy | Manufacturing | 1992 |
| Lyyraks Oy | Construction | 2016 |
| Lötky Media Oy | Information & communication | 2020 |
| M.T.Halonen Oy | Hospitality | 2022 |
| Medinola OY | Wholesale & retail | 2018 |
| MJ Energy Oy | Construction | 2023 |
| MJH Infra OY | Construction | 2014 |
| MMT Rahti Oy | Transport & logistics | 2020 |
| Majoitus ja Muotoilu Silvast Oy | Hospitality | 2025 |
| Makukeidas Ky | Wholesale & retail | 1989 |
| Mallun Mailit Oy | Education | 2020 |
| Maniveivarit Oy | Financial services | 1986 |
| Marine Pizza avoin yhtiö | Hospitality | 2021 |
| Markkinointi Rom Oy | Professional & scientific | 1997 |
| Markkinointitoimisto Woima Oy | Professional & scientific | 2020 |
| Maukkain maku oy | Hospitality | 2025 |
| Meadowshore Oy | Professional & scientific | 2026 |
| Medivarsta Oy | Manufacturing | 2014 |
| Metallirakenne M. Miettinen Oy | Manufacturing | 1986 |
| Metsuripalvelu Metsätassu Oy | Agriculture & fishing | 2023 |
| Metsä Asko Oy | Construction | 2026 |
| Metsäpalo Osakeyhtiö | Administrative & support | 1994 |
| Metsäpalvelu Pennanen Oy | Agriculture & fishing | 2017 |
| Metsätyö Suhonen Oy | Agriculture & fishing | 2018 |
| Mikeltop Oy | Financial services | 2024 |
| Mmeu Oy | Hospitality | 2021 |
| Monipalvelu Askel Ky | Administrative & support | 2014 |
| Monipalvelu Kukkonen Oy | Construction | 2016 |
| Murtomäen Tila Oy | Agriculture & fishing | 2024 |
| Nacoli Oy | Financial services | 2017 |
| Neljävitosena eläkkeelle Oy | Real estate | 2020 |
| Nguyenit Vakuuttaa Oy | Financial services | 2025 |
| Niinan Tilipalvelu Oy | Professional & scientific | 2016 |
| Niinilammen Talli Avoin yhtiö | Agriculture & fishing | 2010 |
| Nilsiän Autokoulu Ky | Education | 2012 |
| Nokuta Ky | Wholesale & retail | 2014 |
| Nord Grip Oy | Wholesale & retail | 2017 |
| Nordic Pipeline Oy | Construction | 2025 |
| North Sales Solution Oy | Construction | 2024 |
| O. Santanen Ky | Transport & logistics | 1984 |
| OK-WINDER Oy | Construction | 2018 |
| Osasto-A OY | Manufacturing | 2007 |
| Okap-IT Ky | Professional & scientific | 2019 |
| Olokoti Oy | Construction | 2022 |
| Optiikka Katse Oy | Wholesale & retail | 2006 |
| Osan Kone Oy | Construction | 1988 |
| Osuuskunta DatMan | Information & communication | 2015 |
| Oy Blueworld Ltd | Wholesale & retail | 2002 |
| Oy Kehvon Kehitys Ltd | Health & social care | 1993 |
| Oy Savonia Agency Ltd Ab | Wholesale & retail | 1981 |
| P1 Siivouspalvelut Oy | Administrative & support | 2020 |
| PKA Enterprise Oy | Professional & scientific | 2024 |
| PKU Oy | Agriculture & fishing | 2025 |
| PRO katsastus Oy | Professional & scientific | 2023 |
| Pee & Vee Invest Oy | Real estate | 2025 |
| Pekan LVI-Tiimi Ky | Construction | 2003 |
| Perämiehen Kiinteistöt Oy | Real estate | 2019 |
| Pettäisenrannan Ratsutila Oy | Agriculture & fishing | 2015 |
| Physio Trainer AS Oy | Financial services | 2024 |
| Pikku Rui Oy | Hospitality | 2025 |
| PlaCon Oy | Professional & scientific | 2025 |
| Pohjois-Savon Soodapuhallus ja Pinnoitustekniikka Oy | Construction | 2018 |
| Powerhold Group Oy | Construction | 2026 |
| Practicum Pathologicum Oy | Health & social care | 2012 |
| Primux Oy | Wholesale & retail | 2012 |
| Pro Agentur Oy | Wholesale & retail | 2006 |
| Puheterapia Jaana Hyvärinen Oy | Health & social care | 2022 |
| Puijo Invest Oy | Construction | 2005 |
| Pursiaisen Auto Ky | Other services | 1987 |
| PutkiSavo Oy | Construction | 2019 |
| Putkieero Ky | Construction | 2014 |
| Puusepänliike M. Rönkä Kommandiittiyhtiö | Manufacturing | 1982 |
| Puutavaraliike Veljekset Rautiainen | Wholesale & retail | 1987 |
| Puutossalmen vesihuolto-osuuskunta | Water & waste | 1997 |
| Päivix Oy | Health & social care | 2025 |
| Pöljänsalmi Consulting Oy | Professional & scientific | 2019 |
| RAMAGO Oy | Construction | 2018 |
| RAMAGO Pohjoinen Oy | Construction | 2024 |
| RM-remontit Oy | Construction | 2026 |
| RTQ Rauno Tikkanen Ky | Arts & recreation | 1998 |
| RV-talot Oy | Construction | 2012 |
| Radiomestari Oy | Information & communication | 2023 |
| Rakennus Kervola Ky | Construction | 1978 |
| Rakennus ja remontointi Fagerlund OY | Construction | 2020 |
| Rakennusliike Koponen Oy | Construction | 2010 |
| Rakennusliike Mauno Juntunen Oy | Construction | 1994 |
| Rakennuspalvelu J. Heide Oy | Construction | 2012 |
| Rakennuspalvelu Murtomäki Oy | Professional & scientific | 2023 |
| Rakennustyö Roivainen Oy | Construction | 2019 |
| RaksaMan oy | Construction | 2021 |
| Ranka Holding Oy | Financial services | 2022 |
| Redneck Motors Oy | Wholesale & retail | 2021 |
| Rehuellit avoin yhtiö | Wholesale & retail | 2015 |
| Reilut Siivut Oy | Wholesale & retail | 2007 |
| Reisam Oy | Wholesale & retail | 1977 |
| Remonttipalvelu Ollikainen Ky | Construction | 2017 |
| Rengas-Vartti Oy | Wholesale & retail | 1989 |
| Rianka Oy | Professional & scientific | 2021 |