| Mintade Oy | Wholesale & retail | 2020 |
| Monifix IT-palvelut Oy | Information & communication | 2026 |
| Moottoriurheilu Rautio Oy | Arts & recreation | 2022 |
| Musiikkipalvelu Ikäheimo Oy | Other services | 1998 |
| MyllyWorks Oy | Real estate | 2002 |
| Myllylän Tila Oy | Agriculture & fishing | 2016 |
| Myynnin A&O Oy | Professional & scientific | 2021 |
| NK Sijoitus Oy | Financial services | 2022 |
| NYAB Finland Oy | Construction | 1987 |
| Nahka ja Laukku Shop Kari Lapinoja Ky | Wholesale & retail | 1988 |
| Neulashovi Oy | Hospitality | 2015 |
| Niemelän Autotalo Oy | Wholesale & retail | 1988 |
| Niemen Lomamökit avoin yhtiö | Hospitality | 1986 |
| Ninotek Oy | Manufacturing | 2010 |
| Nivalan Kivi Oy | Manufacturing | 1979 |
| Nopiko Oy | Manufacturing | 2017 |
| Nordic Mounting oy | Other services | 2025 |
| Nordic Uno Oy | Wholesale & retail | 2025 |
| North Sovereign Capital Oy | Financial services | 2026 |
| North Sovereign Solutions Oy | Professional & scientific | 2026 |
| Nuoren tuki & turva Ky | Health & social care | 2017 |
| Ohtactic Oy | Professional & scientific | 2023 |
| Ojalan Trikootehdas Rauteks kommandiittiyhtiö | Manufacturing | 1975 |
| Ojarent Oy | Real estate | 2018 |
| Ojatek Oy | Construction | 2023 |
| Olkkolan Kiinteistöt Avoin yhtiö | Real estate | 1993 |
| Optiri Oy | Wholesale & retail | 1997 |
| Osuuskunta Tarvike-Kappa | Agriculture & fishing | 1999 |
| Osuuskunta Valkeavesi | Water & waste | 1961 |
| Oy AT Install Ab | Construction | 1986 |
| Oy Citypork Ltd | Agriculture & fishing | 2002 |
| Oy Euromodule Ltd | Manufacturing | 1992 |
| Oy Oja Invest Ltd | Financial services | 2013 |
| Oy Summer Fun Ltd | Arts & recreation | 1996 |
| Petresell OY | Wholesale & retail | 2020 |
| PM Asunnot Oy | Real estate | 2018 |
| PM-Motorsport Ky | Arts & recreation | 1998 |
| Pablos Restaurants Oy | Hospitality | 2023 |
| Pahikainen Engineering Oy | Professional & scientific | 2020 |
| Pahikset Oy | Other services | 2025 |
| Palg Oy | Real estate | 2016 |
| Palica Oy | Transport & logistics | 2022 |
| Pamalog Oy | Manufacturing | 2019 |
| Pauha Invest Oy | Construction | 2023 |
| Pauha Oy | Professional & scientific | 2018 |
| Perintätoimisto Reskont Oy | Administrative & support | 1986 |
| Pessi Productions Oy | Arts & recreation | 2021 |
| Petri Saari Oy | Construction | 1999 |
| Pienkonehuolto Siipo Oy | Other services | 2021 |
| Pihkakiito Oy | Transport & logistics | 2010 |
| Pilo-Tuotanto Oy | Arts & recreation | 1982 |
| Pisa Design Lifestyleshop Aito Oy | Wholesale & retail | 2018 |
| Plassin Parantola Oy | Professional & scientific | 2021 |
| Pleuna Oy | Health & social care | 2025 |
| Pohjan Karhu Oy | Construction | 2022 |
| Pohjanmaan Rehujauhatus Oy | Manufacturing | 2013 |
| Poka Infra Oy | Construction | 2022 |
| Poly&cu Kierrätys oy | Manufacturing | 2022 |
| Powersport Calibrations Oy | Information & communication | 2023 |
| ProSpa Oy | Professional & scientific | 2007 |
| Procant Oy | Manufacturing | 2019 |
| Profican Oy | Manufacturing | 2006 |
| Puhtaasti Kotona Oy | Wholesale & retail | 2020 |
| Puusepänliike Liias Oy | Manufacturing | 1982 |
| Pyhäjoen Kiinteistö Oy Seitsikko | Real estate | 2014 |
| Pyry Takkunen Oy | Other services | 2020 |
| Päiväkoti Arkki Oy | Education | 2015 |
| Päiväkoti JES Oy | Education | 2018 |
| Qvas Oy | Wholesale & retail | 2019 |
| R-Kellari Oy | Manufacturing | 2021 |
| RTA KORPI Oy | Professional & scientific | 2018 |
| Rahja Service Oy | Manufacturing | 1979 |
| Raitin Ravintola Oy | Hospitality | 2019 |
| Rakennushollari Oy | Construction | 1980 |
| Rakennustaitaja Heikkilä Oy | Construction | 2020 |
| Rannikon Hautakivi Oy | Manufacturing | 2018 |
| Rannikon Hevospalvelut Oy | Education | 2025 |
| Rannikon Kodit Oy | Real estate | 2025 |
| Rannikon Konevarustelu Oy | Manufacturing | 2019 |
| Rannikon Laatusisustajat Oy | Construction | 2018 |
| Rannikon Puunkuljetus Oy | Transport & logistics | 2016 |
| Rannikon Taksi Oy | Transport & logistics | 2018 |
| Rannikon kiinteistönvälitys Oy LKV | Real estate | 2016 |
| Rannikon laatutalot Oy | Construction | 2023 |
| Ranvit Oy | Real estate | 2021 |
| Rautakoski Oy | Transport & logistics | 1999 |
| Rautio Tools Oy | Wholesale & retail | 1985 |
| Raution Arvopaperi Oy | Financial services | 1987 |
| Risto Mäkelä Drifting Oy | Arts & recreation | 2025 |
| RuutiEnergia Oy | Energy | 2022 |
| Ryhmäperhepäiväkoti Onnenapila Ky | Education | 2011 |
| Sanna Ja Ville Ollaketo OY | Information & communication | 2022 |
| SJK Capital Oy | Financial services | 2021 |
| SKR Block 1 Oy | Financial services | 2008 |
| SSGP Holding Oy | Financial services | 2021 |
| SSV Maarakennus Oy | Construction | 2014 |
| ST Heikkilä Oy | Manufacturing | 2008 |
| SVI-Invest Oy | Construction | 2023 |
| Sw-Trading OY | Wholesale & retail | 2008 |
| Saapet Oy | Construction | 2013 |