| Oy Håkan Nystedt Ab | Professional & scientific | 1994 |
| Oy Ieri Ab | Professional & scientific | 1997 |
| Oy Investman Ab | Financial services | 1987 |
| Oy J&E Reparation och Servicetjänster Ab | Other services | 2005 |
| Oy Jon Suominen Ab | Transport & logistics | 2017 |
| Oy Jonpee Invest Ab | Real estate | 1996 |
| Oy JÅI-Videoproduction Ab | Information & communication | 1993 |
| Oy Kahantrade Ltd | Wholesale & retail | 1987 |
| Oy Knopman Ab | Manufacturing | 1998 |
| Oy Köpböle Marina Ab | Real estate | 1991 |
| Oy LWG-Transport Ab | Transport & logistics | 2008 |
| Oy Leo Marketing Ab | Professional & scientific | 2005 |
| Oy M2 Sea Company Ab | Administrative & support | 2015 |
| Oy Meribel Marine Ab | Manufacturing | 1992 |
| Oy Municel Finland Ab | Information & communication | 2001 |
| Oy Neo Mobil Ab | Wholesale & retail | 1997 |
| Oy Nimcode Ab | Other services | 1988 |
| Oy Noiram Ab | Financial services | 1984 |
| Oy Norplex Ab | Information & communication | 1986 |
| Oy Norrbyhunt Ab | Agriculture & fishing | 2017 |
| Oy Nylands Stenservice Ab | Wholesale & retail | 1995 |
| Oy Opportunito Ab | Financial services | 1992 |
| Oy Pargas Gård Ab | Wholesale & retail | 2016 |
| Oy Pitkäkatu 11 | Real estate | 2011 |
| Oy Plan m2 Ab | Professional & scientific | 2012 |
| Oy Pollex Ab | Construction | 2001 |
| Oy Pukimo Lema Konfektion Ab | Wholesale & retail | 1962 |
| Oy RK Fysio Ab | Health & social care | 2007 |
| Oy RT - Osat Ab | Financial services | 1978 |
| Oy Raaseporin Metalli-Raseborgs Metall Ab | Construction | 1995 |
| Oy Redodata Ab | Professional & scientific | 1988 |
| Oy Rele Trading Ab | Real estate | 1994 |
| Oy Result Finland Ab | Professional & scientific | 2008 |
| Oy Rosperol Ab | Transport & logistics | 1995 |
| Oy Rönnblad Electronik Ab | Wholesale & retail | 1997 |
| Oy Se-Ka Ab | Construction | 1983 |
| Oy Sekel Ab | Wholesale & retail | 1976 |
| Oy Sjökulla Ab | Professional & scientific | 1963 |
| Oy Soya Ab | Manufacturing | 1990 |
| Oy Sturell Ab | Transport & logistics | 1959 |
| Oy Team Nykopp Ltd | Administrative & support | 1995 |
| Oy Tescon Marine Ab | Wholesale & retail | 1992 |
| Oy Tofag Ab | Construction | 1993 |
| Oy Toffo Ab | Financial services | 1989 |
| Oy US & Co Ab | Financial services | 2008 |
| Oy Urs Hofer Ab | Financial services | 1984 |
| Oy Vallhund Ab | Professional & scientific | 2026 |
| Oy Werner Ab | Manufacturing | 1973 |
| Oy Werner CM Ab | Real estate | 2026 |
| Oy Wiktoys Ab | Wholesale & retail | 2021 |
| Oy Zone-Jajja Ab | Hospitality | 1996 |
| Oy par-anoid Ab | Wholesale & retail | 2018 |
| Pizzon OY | Hospitality | 2019 |
| PLV Monitoimi Oy | Transport & logistics | 2019 |
| PN Group Oy | Real estate | 2018 |
| PP Restaurants Oy Ab | Hospitality | 2016 |
| PRO ikkuna ja oviasennus Oy | Construction | 2024 |
| Paguda Ab | Professional & scientific | 2011 |
| Papper & Hus Ab Oy | Professional & scientific | 2013 |
| Paratiisi Pesu- ja Kuljetus Avoin yhtiö | Other services | 2006 |
| Pario Oy | Wholesale & retail | 2018 |
| Peng Knipan Ab Oy | Real estate | 2014 |
| Peter Rehn AB | Agriculture & fishing | 2010 |
| Pharmacito Oy | Administrative & support | 1995 |
| PiMaS Oy | Health & social care | 2023 |
| Pikkukala Oy | Information & communication | 2012 |
| PkVaihdox Oy | Administrative & support | 2018 |
| Place2Go Oy Ab | Professional & scientific | 2017 |
| Planeringsbyrå Backman Ab - Suunnittelutoimisto Backman Oy | Professional & scientific | 1979 |
| PlayLight Oy | Construction | 2019 |
| Pohjan Sähkö & Putkipalvelu Oy | Construction | 2012 |
| Preferens Ab | Professional & scientific | 1989 |
| Prima Consulting Oy Ab | Professional & scientific | 2021 |
| Procuratio Ab | Real estate | 2026 |
| Proenergi Finland Ab | Construction | 2011 |
| Psykocenter TH Ky | Real estate | 1995 |
| Puerto Nova Oy | Hospitality | 1993 |
| Puusta Finland Oy | Construction | 2007 |
| R.L. Style Oy | Wholesale & retail | 1992 |
| R.M. Enberg Kuljetus Oy | Transport & logistics | 1999 |
| RAS Tältuthyrning öppet bolag | Administrative & support | 2014 |
| RAWE Borrteknik Ab | Transport & logistics | 1986 |
| RBU - Raseborgs Plåtslageri-Raaseporin Peltisepänliike Oy Ab | Construction | 2002 |
| REmont Bygg Oy Ab | Construction | 2026 |
| RIBS Oy Ab | Hospitality | 2023 |
| RKL Consulting Ab | Professional & scientific | 2023 |
| RUBICONIT Kommanditbolag | Professional & scientific | 2001 |
| Raaseporin Autokatsastus Oy | Professional & scientific | 2013 |
| Raaseporin Autokiilto Oy | Other services | 2017 |
| Raaseporin Murskaus Oy | Manufacturing | 1976 |
| Rahakone Oy | Financial services | 2017 |
| Rait Ab Oy | Wholesale & retail | 2009 |
| Rakennusliike Heinämaa Oy | Construction | 2015 |
| Rakennusliike Ikäheimonen Oy | Construction | 2010 |
| Raknova Oy | Construction | 2021 |
| Ramama Oy | Other services | 2026 |
| Raseborg Marina Oy Ab | Arts & recreation | 2024 |
| Raseborgs Boathousing Ab Oy | Real estate | 2012 |
| Raseborgs Bostadsapotek Ab Oy AFM | Real estate | 2013 |
| Raseborgs Energi Ab | Energy | 1991 |