| Mäkisorri Oy | Agriculture & fishing | 2021 |
| N. Sulkanen Ky | Transport & logistics | 2022 |
| NN Yhtiö Oy | Financial services | 2018 |
| Nahkalinna Oy | Real estate | 1990 |
| Neovet Oy | Professional & scientific | 2013 |
| Nord Axiz Group Oy | Professional & scientific | 2026 |
| Nordic Traction Group Oy | Professional & scientific | 2018 |
| Nordic Traction Oy | Manufacturing | 1990 |
| Norri Kommandiittiyhtiö | Transport & logistics | 1978 |
| Nöpö Oy | Administrative & support | 2018 |
| OA Loimaa Oy | Other services | 2019 |
| OK-Cargo Oy | Transport & logistics | 2011 |
| OP-Talon Hammaslääkärikeskus Oy | Health & social care | 1988 |
| OPKO Solutions Oy | Administrative & support | 2024 |
| Okemo Oy | Manufacturing | 1996 |
| Optimointipalvelut Loimaa Oy | Other services | 2020 |
| Optinia Oy | Construction | 2015 |
| Orex Oy | Transport & logistics | 2024 |
| Orvokkilinna Oy | Health & social care | 2026 |
| Oskar Invest Oy | Financial services | 1987 |
| Osuuskunta Daka | Information & communication | 1997 |
| Osuuskunta Knob 11 Production | Information & communication | 2017 |
| Overhouse Oy | Transport & logistics | 2025 |
| Oy Chip Leader Ab | Hospitality | 2006 |
| Palo Itc Oy | Information & communication | 2026 |
| Palvelupiste Parkki Oy | Real estate | 1990 |
| Palveluyhteisö Entitas Oy | Health & social care | 2009 |
| Patrel Oy | Manufacturing | 1998 |
| Patruunan juhla & majoitus Oy | Hospitality | 2022 |
| Peiponen Oy | Manufacturing | 1989 |
| Pelti ja asennus Molander Oy | Construction | 2024 |
| Pemamek Invest Oy | Professional & scientific | 2024 |
| Pemamek Oy | Manufacturing | 1984 |
| Penttilän Sähkövarasto Oy | Construction | 1994 |
| Perhekoti Puisto Oy | Health & social care | 2024 |
| Perran Ratsutila Ky | Arts & recreation | 2017 |
| Pewag Nordic Oy | Manufacturing | 2019 |
| Pirkanmaan Lämpöpumppu Oy | Construction | 2020 |
| Piste i Oy | Information & communication | 2013 |
| Pj Yrjölä Oy | Construction | 2011 |
| Postamer Oy | Manufacturing | 2000 |
| Poutakesän Pienmeijeri Oy | Manufacturing | 2011 |
| Priimus Media Oy | Information & communication | 2004 |
| Pro Horsefit Oy | Arts & recreation | 2002 |
| Puro Pro Oy | Education | 2016 |
| Putkiasennus J. Koivusaari Oy | Construction | 2017 |
| Puukauppa Matti Oy | Wholesale & retail | 2025 |
| Pykäläviidakko Oy | Real estate | 1988 |
| RA-myynti&välitys Oy | Wholesale & retail | 2022 |
| RSOfood Oy | Hospitality | 2021 |
| RT-Creations Oy | Education | 2020 |
| RT-Rakennuspalvelu Oy | Construction | 2025 |
| Raikiri Oy | Information & communication | 2024 |
| Raikkonen Oy | Manufacturing | 1975 |
| Rak-Siiv Ky | Construction | 2002 |
| Rakennus Lankinen Oy | Construction | 2014 |
| Rakennus Tapiiri Oy | Construction | 2005 |
| Rakennusliike A & J Laaksonen Ky | Construction | 1998 |
| Rakennusliike Aimo Ahvenus Ky | Construction | 1975 |
| Rakennusliike Mika Suvanto Oy | Construction | 2011 |
| Rakennusliike Vienonen ky | Construction | 1985 |
| Rakennuspalvelu Otto Aaltonen Oy | Construction | 2018 |
| Rakennustoimisto Teuvo Kauppi Oy | Construction | 2020 |
| Rape Invest Oy | Real estate | 2006 |
| Raptec Oy | Wholesale & retail | 2006 |
| Ravintola Ata Ky | Hospitality | 2004 |
| Remachine Oy | Manufacturing | 2014 |
| Repairfix Ky | Construction | 2001 |
| Retki ja Matkapalvelu Hannele avoin yhtiö | Administrative & support | 2006 |
| Revotek Rakennus Oy | Construction | 2025 |
| Riihe Oy | Agriculture & fishing | 2023 |
| Riuttaskorven Luomutila Oy | Agriculture & fishing | 2018 |
| Roadskills Oy | Education | 2024 |
| Robot Automation Group Oy | Professional & scientific | 2020 |
| Robotmation Oy | Manufacturing | 2005 |
| Rollspeed-Center Ky | Manufacturing | 1991 |
| Rovio Pet Foods Oy | Manufacturing | 2019 |
| Royal Siam Group Oy | Hospitality | 2026 |
| Rukan Kuusikko Oy | Real estate | 2007 |
| SK-Lähde Oy | Financial services | 2020 |
| SL Parent Company Oy | Professional & scientific | 2016 |
| SL Rappaus Oy | Construction | 2005 |
| SL Rappaus Oy Pirkanmaa | Construction | 2022 |
| SL Rappaus Oy Uusimaa | Construction | 2022 |
| SL Rappaus Oy Varsinais-Suomi | Construction | 2022 |
| SL Saneeraus Oy | Construction | 2022 |
| SM Sähköturva Ky | Construction | 2025 |
| SPT Media Oy | Professional & scientific | 2025 |
| SV-Urakointi Ky | Construction | 1991 |
| Safe Training Finland Oy | Administrative & support | 2008 |
| Salfrans Oy | Real estate | 2009 |
| Sallo Oy | Real estate | 1993 |
| Salon Foto-Lehti Oy | Professional & scientific | 2001 |
| San Jorgos Oy | Professional & scientific | 2020 |
| Sanrate Oy | Construction | 2011 |
| Saunamieli avoin yhtiö | Wholesale & retail | 2025 |
| Savema Oy | Agriculture & fishing | 2023 |
| Saviseudun Investointi Oy | Construction | 1995 |
| Selinheimon Tila Oy | Agriculture & fishing | 2018 |
| Seriplus Oy | Real estate | 2015 |