| Nordic Floors Oy | Manufacturing | 2018 |
| Nordic Funds Oy | Professional & scientific | 2022 |
| Nostopalvelu J. Alakojola Oy | Construction | 2010 |
| Nuukapaikka Oy | Real estate | 2008 |
| Ojutkankaan Vesi Oy | Water & waste | 1974 |
| Ojutlohi Oy | Agriculture & fishing | 1987 |
| Orahalla Oy | Agriculture & fishing | 1998 |
| Origo Oy | Professional & scientific | 1988 |
| Osakeyhtiö Kattara | Real estate | 1931 |
| Oslos Oy | Wholesale & retail | 2024 |
| Overhill Oy | Administrative & support | 2021 |
| Oy AMK international trade & invest Ltd | Wholesale & retail | 1992 |
| Oy Arctic Midnight Sun Food Farms Ltd | Agriculture & fishing | 1995 |
| Oy Comcomp Finland Ltd | Professional & scientific | 1989 |
| Oy Ecocraft Ltd | Professional & scientific | 1975 |
| Oy Finntoy Innovation Ltd | Professional & scientific | 1991 |
| Oy Golden Eagle Ltd | Other services | 1993 |
| Oy MoneyRiff Corp. | Professional & scientific | 2024 |
| Oy New Tech Euroengineering Ltd | Manufacturing | 1992 |
| Oy Salexport Ab | Professional & scientific | 2018 |
| Oy Tai hovi food Ab | Hospitality | 2024 |
| PAKU-Trailer Group Oy | Manufacturing | 2011 |
| PKO-kirjanpitopalvelut Koivumäki Ky | Administrative & support | 2019 |
| PL-Metals Oy | Manufacturing | 2007 |
| PMP-Palvelut Oy | Hospitality | 2020 |
| PP-Hydraulics Oy | Manufacturing | 2005 |
| Pp-Tuote OY | Manufacturing | 2010 |
| PRK Invest Oy | Professional & scientific | 2024 |
| PS Holding Oy | Professional & scientific | 2009 |
| PTM-Metals Oy | Manufacturing | 2015 |
| Pakko jaksaa O.N. Oy | Information & communication | 2006 |
| Palkinto-Asema Oy | Wholesale & retail | 2001 |
| Palmu & Turja Oy | Construction | 2026 |
| Panla Invest Oy | Financial services | 2024 |
| Parofax Oy | Construction | 1997 |
| Parturikampaamo Minna Luoma Ky | Other services | 1996 |
| Paukun Ampumaputki Oy | Wholesale & retail | 2026 |
| Pelanderin Kaivuu Oy | Administrative & support | 1989 |
| Peltomäen Lintu Oy | Agriculture & fishing | 1998 |
| Perhekoti Satulinna Oy | Health & social care | 2021 |
| Perhekoti Suvituuli Oy | Health & social care | 2022 |
| Petri Sillanpää Ky | Transport & logistics | 2011 |
| Pewe Service Oy | Manufacturing | 2018 |
| Pihilis Oy | Other services | 2020 |
| Pikahuolto Lapua Oy | Other services | 2010 |
| Pirjon Kodit LKV Oy | Real estate | 1998 |
| Pirttikosken Pirtti Oy | Construction | 2008 |
| Pizzeria Elma Avoin yhtiö | Hospitality | 1997 |
| Plate Power Oy | Manufacturing | 2002 |
| Plugipojat Avoin yhtiö | Administrative & support | 2011 |
| Pohjanmaan CNC-koneistus Ky | Manufacturing | 1995 |
| Pohjanmaan Lakipalvelu Oy | Professional & scientific | 2009 |
| Poutunlehdon Lämpö Oy | Energy | 2012 |
| Power Kiinteistöt Oy | Real estate | 2007 |
| Power Time Oy | Construction | 2000 |
| Powercuss Oy | Professional & scientific | 1995 |
| Psl A Tuurinmäki Ky | Manufacturing | 1979 |
| Puhdas company Oy | Manufacturing | 2020 |
| Puuhalouhinta Oy | Mining & quarrying | 2010 |
| Rl-Store OY | Wholesale & retail | 2013 |
| Rosbed OY | Manufacturing | 2005 |
| Radio Simpsiö Oy | Information & communication | 1984 |
| Rakennus Hakomäki Oy | Construction | 2008 |
| Rakennus Jaakko Latvala Oy | Construction | 2009 |
| Rakennus Konsti Oy | Construction | 2016 |
| Rakennus Oy, Lapua | Construction | 2006 |
| Rakennus VuoSa Oy | Construction | 2007 |
| Rakennus-Kovera Oy | Construction | 2003 |
| Rakennusliike Ellilä Oy | Construction | 2024 |
| Rakennusliike Olli Lahdensuo Oy | Real estate | 2004 |
| Rakennuspalvelu H Mattila Ky | Construction | 2012 |
| Rakennuspalvelu Unkuri Oy | Construction | 1994 |
| Ramsirec Oy | Construction | 1995 |
| Raniko Oy | Construction | 2023 |
| Rautakorpi Palvelut Oy | Manufacturing | 2025 |
| Ravaltec Oy | Real estate | 2013 |
| Ravaltsu Oy | Manufacturing | 2017 |
| Ravintola Väiski Oy | Real estate | 2011 |
| Reliikki Birgitta Hautala Ky | Wholesale & retail | 1988 |
| Riima Oy | Professional & scientific | 2016 |
| Risto Kangas Oy | Wholesale & retail | 2001 |
| Riverside Academy Oy | Real estate | 2021 |
| Ronmix Oy | Construction | 2025 |
| Royal Beauty Accessories Oy | Wholesale & retail | 2022 |
| Royal Beauty Group Oy | Other services | 2022 |
| Royal sulky Oy | Manufacturing | 2025 |
| Rupu Studio Oy | Other services | 2026 |
| Ruuskasen Romu Oy | Wholesale & retail | 1979 |
| S & M Realinvest Oy | Real estate | 1990 |
| S&M. Mäkynen Konsult Ky | Professional & scientific | 1975 |
| SRP-Saari Oy | Construction | 2011 |
| Saarenpää Oy | Wholesale & retail | 2004 |
| Saha Kari Luoma Ky | Manufacturing | 2003 |
| Saimaan Rantakiinteistöt Oy | Real estate | 2017 |
| Salaojitus Leppinen Oy | Construction | 1995 |
| Sami Saari Oy | Manufacturing | 2025 |
| Sandvet Oy | Professional & scientific | 2018 |
| Santa Claus Fashion Dolls Ltd Oy | Financial services | 1997 |
| Santala Print Oy | Manufacturing | 1988 |
| Sarajana Ky | Construction | 1992 |