| A-Venepalvelu Oy | Manufacturing | 2018 |
| APLAB Oy | Information & communication | 2019 |
| Ahteentaan Laiturit Oy | Administrative & support | 1993 |
| Aidalla Ky | Professional & scientific | 2002 |
| Ajolanranta Oy | Manufacturing | 2008 |
| Avoin yhtiö M ja M Arvonen | Construction | 1999 |
| BCB Boats Media Oy | Information & communication | 2026 |
| Bergudd Capital Ab | Financial services | 2022 |
| Bistro-Tuote Oy | Manufacturing | 1998 |
| C-E Plathin Oy | Professional & scientific | 1975 |
| DJB Services Oy | Construction | 2015 |
| Delimill oy | Wholesale & retail | 2007 |
| Dentosaurus Oy | Health & social care | 2015 |
| Eino Aalto Ky | Wholesale & retail | 1983 |
| Electric-SAM Oy | Construction | 2016 |
| Eternal Solutions Oy | Information & communication | 2023 |
| Eurocab Palojoki Oy | Construction | 1995 |
| Famill Oy | Manufacturing | 2006 |
| Finvaje Oy | Arts & recreation | 2017 |
| Fourfold Oy | Real estate | 2003 |
| Goldvesti Oy | Construction | 1997 |
| Hb-Kunnostaja OY | Construction | 2006 |
| Heikki Harismaa OY | Professional & scientific | 2003 |
| Hehkuja Oy | Manufacturing | 2001 |
| Herrankukkaro Oy | Education | 1979 |
| Hevosheinää Oy | Professional & scientific | 2025 |
| I & T Päivölä Oy | Transport & logistics | 1999 |
| Impulssi-instituutti Oy | Health & social care | 1996 |
| Insinööritoimisto Petteri Oy | Professional & scientific | 1994 |
| Janron Ky | Wholesale & retail | 1987 |
| KJA-konsultointi Ky | Construction | 2004 |
| Kanttuvei Oy | Hospitality | 1997 |
| Kholdan Invest Oy | Financial services | 2024 |
| Kiinteistö Oy Koivistontie 9 | Real estate | 2012 |
| Kiinteistö Oy Naantalin Hankekatu 1 | Real estate | 2021 |
| Kiinteistö Oy Paanukallio | Real estate | 1996 |
| Kiinteistö Oy Pollenkuja 1 | Real estate | 2016 |
| Kiinteistö Oy Röölän Kauppakulma | Real estate | 2011 |
| Kiinteistö-Ventti Oy | Real estate | 2011 |
| Kiinteistöosakeyhtiö Fimu | Real estate | 1999 |
| LED Company Oy | Wholesale & retail | 2012 |
| LVI-Lehtisaari Oy | Construction | 2021 |
| Laiheli Oy | Financial services | 1988 |
| Laitsalmen vesiosuuskunta | Water & waste | 2006 |
| M.M. Lattiapalvelut Oy | Construction | 2024 |
| MKH Palvelut Oy | Manufacturing | 2001 |
| MM Import Oy | Wholesale & retail | 2014 |
| MSP-Kuljetus Oy | Transport & logistics | 2002 |
| MVM Holding Oy | Financial services | 2026 |
| MVM Nordic Oy | Construction | 2026 |
| MVM Yhtymä Oy | Construction | 2018 |
| Motrox Oy | Other services | 2010 |
| Naantalin Neliöt Oy | Real estate | 1989 |
| Naantalin Ula-Taksi Oy | Transport & logistics | 1991 |
| Niemisen Maa- ja Satamatyöt Oy | Construction | 2003 |
| Nixi-Vakka Oy | Professional & scientific | 1997 |
| Noaur Group Oy | Professional & scientific | 2024 |
| Noaur Ventures Oy | Financial services | 2026 |
| Noore Oy | Manufacturing | 1998 |
| Nordic Shipbuilding Materials NSM Oy | Wholesale & retail | 1995 |
| NordicBrothers Oy | Manufacturing | 2021 |
| NordicaWoods Oy | Manufacturing | 2022 |
| Norsu Oy | Information & communication | 1989 |
| Noste & Co Oy | Professional & scientific | 2026 |
| Nowtinto Capital Oy | Financial services | 2020 |
| Nowtinto Oy | Financial services | 2019 |
| Nurmire Oy | Professional & scientific | 2021 |
| Omh Group OY | Administrative & support | 2025 |
| Onnela Palvelut Lindström Oy | Manufacturing | 2015 |
| Opit ja Tilit Oy | Professional & scientific | 2015 |
| Oy Rimito Power Ab | Construction | 2024 |
| PK Pohjakulma Oy | Manufacturing | 2014 |
| Paassilta Property Oy | Real estate | 2018 |
| Patenttitoimisto Kari Pirhonen Oy | Professional & scientific | 1990 |
| Petetec Ky | Construction | 2011 |
| Pian Kammari Oy | Health & social care | 2016 |
| Pihapuunkaato V & K Oy | Administrative & support | 2017 |
| Pronum Group Oy | Wholesale & retail | 2018 |
| R-sähköautomaatio Oy | Construction | 2011 |
| Re My Soul OY | Administrative & support | 2018 |
| RR-Projektipalvelu Oy | Construction | 1992 |
| Rajatek Oy | Manufacturing | 1989 |
| Rakennus ja Lasi Viitanen Oy | Wholesale & retail | 2011 |
| Rakennushanke Risto Kemppe Oy | Construction | 2007 |
| Rakennusliike Rymtek Oy | Construction | 2022 |
| Ravintola Pohjakulma Oy | Hospitality | 1995 |
| Ravintola Rymiksen Mummola Oy | Hospitality | 2023 |
| Rimito Constructions Oy | Construction | 2022 |
| Rimito Dyning Oy | Manufacturing | 1998 |
| Rimito Invest Oy | Professional & scientific | 2022 |
| Ritun Taxi Oy | Transport & logistics | 2022 |
| Ry-Sä Oy Rymättylä | Hospitality | 2007 |
| Rymättylän Osuuspankki | Financial services | 1922 |
| SC Marine Oy | Manufacturing | 2025 |
| SE Ohana Oy | Construction | 2026 |
| Saariston Bitumi Oy | Construction | 2024 |
| Saariston Luomukana Oy | Agriculture & fishing | 2021 |
| Saariston Siipikarja Oy | Agriculture & fishing | 1995 |
| Saariston Talonmiehet Oy | Construction | 2012 |
| Saariston Tekniikka Group Oy | Manufacturing | 2023 |