| Aallon auto- ja konekorjaamo Ky | Other services | 2006 |
| Apuväline Visual Focus Mikael Toivainen Oy | Wholesale & retail | 2011 |
| Arin Pienkonekaivu Oy | Construction | 2000 |
| Centro Rakennus Oy | Construction | 1998 |
| E.H.A.-Pelti Oy | Manufacturing | 1997 |
| EZone Avoin yhtiö | Professional & scientific | 2005 |
| Eumer Finland Oy | Manufacturing | 2007 |
| Eumer Group Oy | Real estate | 2018 |
| Eumer Oy | Wholesale & retail | 1994 |
| Eumer Resort Oy | Hospitality | 2025 |
| Frome oy | Professional & scientific | 2025 |
| Geoloc Oy | Information & communication | 2022 |
| HiMuRa Oy | Construction | 2013 |
| J Roström Oy | Construction | 2014 |
| JAMER Ky | Administrative & support | 2016 |
| JMH Group Oy | Real estate | 2001 |
| Jetor Oy | Wholesale & retail | 2013 |
| Jofage Ky | Manufacturing | 1982 |
| Jofakiinteistöt Oy | Real estate | 2001 |
| Jofatekniikka Oy | Manufacturing | 1991 |
| Jokimäki Invest Oy | Professional & scientific | 2006 |
| Jokitähkä Oy | Hospitality | 2006 |
| Jungle Records Oy | Wholesale & retail | 1990 |
| KMRengineering Oy | Manufacturing | 2008 |
| KSV treeni ja ravinto Oy | Arts & recreation | 2019 |
| Kala Rantamaa Oy | Agriculture & fishing | 2022 |
| Kalaliike Eljas Santa Ky | Wholesale & retail | 1963 |
| Kiinteistö Oy Alakylän Ojamo | Real estate | 1989 |
| Kiinteistö Oy Jumpinpelto | Real estate | 1971 |
| Kiinteistö Oy Länsiranta II | Real estate | 1989 |
| Kiinteistö Oy Merikarvian Länsituuli | Real estate | 1995 |
| Kiinteistö Oy Merikarvian Seiska | Real estate | 1988 |
| Kiinteistö Oy Suulivainio | Real estate | 1973 |
| Kiinteistö Oy Taviranta | Real estate | 2017 |
| Kiinteistö Oy Trutreveli | Real estate | 1992 |
| Kiinteistö Oy Vapaudenpuisto | Real estate | 1989 |
| Kirju Oy | Professional & scientific | 1989 |
| Kodin Puoti Oy | Wholesale & retail | 2024 |
| Kone ja Kuljetus Peltomäki Oy | Agriculture & fishing | 2005 |
| Konetyöstö Kallio KY | Manufacturing | 2007 |
| Konetyöstö Kuusinen Oy | Manufacturing | 1981 |
| Korjaamo Stolpe Ky | Other services | 1986 |
| Korsi Oy | Financial services | 1994 |
| Koti- ja Mökkitalkkari Jokke Oy | Administrative & support | 2021 |
| Kouhi Capital Oy | Financial services | 2012 |
| Kuljetus & Liikenne Salminen Oy | Transport & logistics | 2022 |
| Kuljetus Pitkäranta Oy | Transport & logistics | 2013 |
| Kuljetusliike A. Kallioinen Oy | Transport & logistics | 2020 |
| Langrevelin Vesiosuuskunta | Construction | 2009 |
| LocaLinna Oy | Water & waste | 2026 |
| Luoteis-Satakunnan Timperman Ky | Manufacturing | 1988 |
| Lännen auto- ja venehuolto Oy | Other services | 2016 |
| Länsivaraosa Oy | Wholesale & retail | 2020 |
| Maalausliike T. Laikkoja Ky | Construction | 1985 |
| Majatalo Merikarvia avoin yhtiö | Hospitality | 2019 |
| Meridog Oy | Wholesale & retail | 2024 |
| Merifysio Ky | Health & social care | 1987 |
| Merikarvian LVI-Tuote Oy | Manufacturing | 1988 |
| Merikarvian Leipomo Ky | Manufacturing | 1991 |
| Merikarvian Lämpö Oy | Energy | 1998 |
| Merikarvian Sote- ja pelakiinteistöt Oy | Real estate | 2026 |
| Merikarvian Säästökulma Oy | Real estate | 2018 |
| Merikarvian Vuokra-asunnot Oy | Real estate | 2018 |
| Merikarvian jäähalli oy | Real estate | 2011 |
| Merimetalli Kommandiittiyhtiö | Construction | 1984 |
| Merimurske Oy | Mining & quarrying | 1990 |
| Merinet Oy | Wholesale & retail | 2010 |
| Meriser Oy | Manufacturing | 1977 |
| Mun Oma Oy | Real estate | 2021 |
| PTM-Talot Oy | Construction | 2004 |
| Pentti Malmi Oy | Construction | 1990 |
| Pitokerttu Oy | Hospitality | 2026 |
| Polunki Oy | Real estate | 2018 |
| Putkiasennus M Marttila Ky | Construction | 2006 |
| Puutyöliike P. Nurmi Ky | Construction | 1997 |
| Rahameri Oy | Financial services | 1998 |
| Rakennuspalvelu Lähteenmäki Oy | Construction | 2006 |
| Rakennustoimisto Heikki Hakosalo Oy | Professional & scientific | 1974 |
| Rannikon Teollisuuspalvelu Oy | Real estate | 2012 |
| Reroute Oy | Professional & scientific | 2019 |
| Rintala LVO Oy | Wholesale & retail | 1980 |
| Riverside Nature Oy | Administrative & support | 1987 |
| Saaristohammaslääkäri Oy | Health & social care | 2006 |
| Sapper Oy | Professional & scientific | 1992 |
| Sasebo Oy | Real estate | 1997 |
| Satu's Place Ky | Wholesale & retail | 2011 |
| SeaPack Oy | Manufacturing | 2005 |
| Siivousapu Pölysieppo Ky | Administrative & support | 2014 |
| Sähkö-Pallo avoin yhtiö | Wholesale & retail | 1977 |
| Sähköasennus Toivola Oy | Construction | 2011 |
| Techukka Ky | Professional & scientific | 2017 |
| TeeJo Oy | Professional & scientific | 2014 |
| Tepe Paino Oy | Wholesale & retail | 1993 |
| Terko Ky | Manufacturing | 1990 |
| The Merry Monk Reposaari Oy | Hospitality | 2015 |
| Trolwood Oy | Manufacturing | 2018 |
| Tupla O Oy | Education | 2024 |
| Turun Rakennekymppi Oy | Construction | 1991 |
| Useimmiten Kati Oy | Hospitality | 2016 |
| Veikkuli Oy | Wholesale & retail | 2023 |