| Kalliobetoni Oy | Construction | 1978 |
| Kampin Kouru oy | Construction | 2019 |
| Kanagri Oy | Wholesale & retail | 2017 |
| Kananoja Group Oy | Construction | 2022 |
| Keränen Dairy Oy | Agriculture & fishing | 2023 |
| Kespu Oy | Wholesale & retail | 2014 |
| Kiinteistö Oy Ilmajoen Tennishalli | Real estate | 1984 |
| Kiinteistö Oy Lanssikuja 2 | Real estate | 2011 |
| Kiinteistö Oy Seinäjoentie 59 | Real estate | 2008 |
| Kiinteistö Oy Ukkohovi | Real estate | 1989 |
| Kiinteistö Oy Vaasan Moreenikuja 2A | Real estate | 2009 |
| Kirnucopla Osk | Arts & recreation | 2012 |
| KmariaK Ky | Other services | 2009 |
| Konekaari Oy | Real estate | 2000 |
| Koneurakointi Ala-Kauppila Oy | Construction | 2014 |
| Koneurakointi Niemistö Oy | Construction | 2024 |
| Koskisen Yrityspalvelu Oy | Professional & scientific | 2004 |
| Kotopihan Lapiosankarit Oy | Construction | 2024 |
| Kuljetus T. Saari Ky | Transport & logistics | 1980 |
| Kuljetus ja Urakointi J&J Saarinen Oy | Transport & logistics | 2017 |
| Kuljetusliike K&J Kivisaari Oy | Transport & logistics | 2021 |
| Kuljetusliike Kivelä Ky | Transport & logistics | 1984 |
| Kuljetusliike Koivulahti Oy | Transport & logistics | 1988 |
| Kuntoplassi Oy | Health & social care | 2009 |
| Kurikan Säästölämpö Oy | Energy | 1979 |
| Kurott-Import Ky | Other services | 1998 |
| Kuusseiskan Saha Oy | Manufacturing | 1988 |
| Kvanttifarmi Oy | Agriculture & fishing | 2015 |
| Kyrönjoen Pankkikulma Oy | Real estate | 2022 |
| Könnintien Konehuolto Oy | Other services | 2011 |
| Laakson Metalli Oy | Manufacturing | 1961 |
| Lahtijouppi Oy | Agriculture & fishing | 2018 |
| Laine-Yhtymä, avoin yhtiö | Transport & logistics | 1969 |
| Lakeuden Ilmailuosuuskunta | Arts & recreation | 2015 |
| Lakeuden Tehopesu Oy | Administrative & support | 2023 |
| Lakitoimisto Alhoke, avoin yhtiö | Professional & scientific | 1987 |
| Laser-Apu Ky | Health & social care | 1991 |
| Laskentawelhot Ky | Professional & scientific | 2020 |
| Latva-Hoppala Oy | Construction | 2018 |
| Lauri Yhtiöt Oy | Financial services | 2026 |
| Lauttamus Ravintolat Oy | Hospitality | 2026 |
| Levimaa Oy | Construction | 2017 |
| LiliumetM Oy | Financial services | 2024 |
| Liskomaa Oy | Wholesale & retail | 2025 |
| Luna Beauty Oy | Other services | 2025 |
| Luppokurikka Oy | Hospitality | 1989 |
| Lähdesmäki Invest Oy | Real estate | 2002 |
| Lähdesmäki Oy Ilmajoki | Wholesale & retail | 1985 |
| Lähteen turve ja lämpö Oy | Mining & quarrying | 2009 |
| M Laukas Ky | Wholesale & retail | 2008 |
| M. Isomäki Oy | Water & waste | 2013 |
| MHW Force Ky | Manufacturing | 2010 |
| MM-investing Oy | Real estate | 2020 |
| MSK-Kiinteistöt Oy | Real estate | 2012 |
| MaJaSa Oy | Hospitality | 2020 |
| Maarakennus Saranpää Ky | Mining & quarrying | 1980 |
| Maaseututilit Oy | Professional & scientific | 2010 |
| Maitomarkki Oy | Agriculture & fishing | 2022 |
| Maitomäki Oy | Agriculture & fishing | 2023 |
| Mediclaudo Oy | Information & communication | 2020 |
| Meirän Punttis Oy | Arts & recreation | 2025 |
| Mera-Palvelu Oy | Professional & scientific | 1998 |
| MerjaKoo Oy | Hospitality | 2025 |
| Mertum Net Systems Oy | Information & communication | 1999 |
| Mettalo Invest Oy | Real estate | 1986 |
| Mäenpää Infra Oy | Manufacturing | 2000 |
| Mäkelä Consulting Oy | Construction | 2021 |
| Nord Elite OY | Wholesale & retail | 2024 |
| Neiser Finland Oy | Professional & scientific | 2008 |
| Next Level Beauty Oy | Other services | 2010 |
| Ninjaware Oy | Real estate | 2011 |
| Nordic Nectar Oy | Manufacturing | 2024 |
| North Avenue Avoin yhtiö | Wholesale & retail | 2011 |
| OY Hortimill LTD | Manufacturing | 2018 |
| Oikea Konekauppa Pro Oy | Wholesale & retail | 1996 |
| Osk Ompeluliike Sopiva | Manufacturing | 2015 |
| Osuuskunta Likeltä | Wholesale & retail | 2020 |
| Oy Freca Sales Ab | Administrative & support | 1999 |
| Oy Leanman Ltd | Professional & scientific | 2005 |
| Oy PackandBale Ltd | Manufacturing | 2025 |
| Oy Showtrans Ltd | Transport & logistics | 1997 |
| Oy Tukkuloora Ab | Manufacturing | 2016 |
| PL-Kalustemestarit Oy | Manufacturing | 2023 |
| PMV Koneet Oy | Administrative & support | 2007 |
| Pxnorth OY | Transport & logistics | 2012 |
| Paka Lines Kontiokoski & Kontiokoski | Transport & logistics | 2010 |
| Palon Katsastus Oy | Professional & scientific | 2016 |
| Pappilan Rantapuisto Oy | Real estate | 2019 |
| Pehtaari Oy | Agriculture & fishing | 2016 |
| Pii Poo Oy | Wholesale & retail | 2016 |
| Piirto Management Oy | Professional & scientific | 2017 |
| Pohjanmaan Lavettikuljetus & Konetyö V.Koivukoski Oy | Transport & logistics | 2019 |
| Pohjanmaan Maanrakennus ja Voimalinjatyö Ky | Construction | 1989 |
| Pohjanmaan Tiilirakenne Oy | Construction | 1990 |
| Pohjanmaan Tulkkauspalvelu Oy | Professional & scientific | 2024 |
| Pohjanmaan Ylijäämätuote Oy | Wholesale & retail | 1987 |
| Pohjanmaan tarviketalo Oy | Manufacturing | 2023 |
| Pojanluoman Rakennus Oy | Construction | 1989 |
| Poor Design Oy | Other services | 2012 |
| Porsassuora Oy | Agriculture & fishing | 2006 |