| AM Automäkinen Oy | Manufacturing | 1970 |
| AP Flis Oy | Administrative & support | 2022 |
| Aseman Kuivuri Oy Perniö | Real estate | 2008 |
| Avoin yhtiö Kaukonpyöli Lapila & Lapila | Information & communication | 1981 |
| Casa Assa30 Oy | Administrative & support | 2002 |
| Digistailaus Oy | Information & communication | 2022 |
| FP-Osakevarastot Oy | Real estate | 1990 |
| Finnparttia Oy | Wholesale & retail | 1987 |
| Flisap Oy | Manufacturing | 2005 |
| Fontell Granite Ltd Oy | Mining & quarrying | 2006 |
| Frank Palomo Oy | Wholesale & retail | 1997 |
| Hallonmäen Siideripanimo Oy | Manufacturing | 2018 |
| Haro Trading Group Oy | Wholesale & retail | 2007 |
| Invataksi ja tilausliikenne Jalonen Oy | Transport & logistics | 2012 |
| Jaawi Oy | Education | 2007 |
| Jarkus Design Oy | Information & communication | 2015 |
| Kiinteistö Oy Muurlan Hallinmäki | Real estate | 1993 |
| Kiinteistö Oy Muurlan Hallitori | Real estate | 1992 |
| Kiinteistö Oy Perniön Pajat | Real estate | 1989 |
| Kuljetus Saarinen Oy | Transport & logistics | 2015 |
| Kulmalan puutarha Oy | Agriculture & fishing | 2020 |
| Lohioja Oy | Financial services | 1990 |
| Mooncamp Oy | Information & communication | 2018 |
| Oiva Osuus Oy | Professional & scientific | 2015 |
| Ontrail Oy | Construction | 2018 |
| Opaliina Oy | Hospitality | 2026 |
| Osuuskunta Pro Perniö | Real estate | 2014 |
| Oy Team Limetec Ab | Manufacturing | 2020 |
| P.J.V. Työkalutiimi Oy | Construction | 1996 |
| Paanukatto ja Terva J. Förström Oy | Construction | 1982 |
| Paarskylän Kiinteistö Oy | Agriculture & fishing | 1988 |
| Perniön Putkitarvike OY | Construction | 2004 |
| Pääristen jätevesiosuuskunta | Water & waste | 2009 |
| Rakennuspalvelu M. Oksanen Oy | Construction | 2025 |
| Romulan Tila Oy | Agriculture & fishing | 2014 |
| Salon Tuontikone OY | Wholesale & retail | 2020 |
| Salon TVV Oy | Real estate | 1994 |
| Samabio oy | Water & waste | 2022 |
| Spredi Oy | Real estate | 1987 |
| TP Investment Oy | Agriculture & fishing | 2025 |
| Työntutkimus ST Oy | Real estate | 2010 |
| Vaanelan puutarha Oy | Agriculture & fishing | 2018 |
| Vilja-Asema Oy | Transport & logistics | 2011 |
| Ville Lamminen Consulting Oy | Information & communication | 2020 |
| Vuudi Ky | Construction | 2015 |
| Ykköstien Putkityö Oy | Construction | 1998 |
| asdfgh Oy | Professional & scientific | 2021 |