| Isojoki Data Center Oy | Real estate | 2026 |
| JCON Greenhouse Ab | Agriculture & fishing | 2007 |
| JD Construction Ab | Construction | 2010 |
| JJL Invest Öppet bolag | Administrative & support | 2002 |
| JJL Svets Ab/Oy | Manufacturing | 2008 |
| JK Nova Oy Ab | Transport & logistics | 2018 |
| JMP Alitus Ab Oy | Construction | 2022 |
| JP Rent a Chef Ab Oy | Hospitality | 2024 |
| JS Commerce Ab | Professional & scientific | 2008 |
| JS-Security Kb, Ky | Wholesale & retail | 1999 |
| Jannes Gym Kb | Arts & recreation | 1992 |
| Jannes Video-Tv kommanditbolag | Wholesale & retail | 1980 |
| Jollila Oy | Wholesale & retail | 2017 |
| Juridisk byrå - Lakiasiaintoimisto Hanna Stenholm Ab Oy | Professional & scientific | 2020 |
| KBF Medi Ab Oy | Health & social care | 2012 |
| KCS-Invest Ab | Manufacturing | 2013 |
| KMB-fastigheter Ab | Professional & scientific | 1987 |
| Kajmax öppet bolag | Real estate | 1990 |
| Kb Nili-Systems Nils Lindberg Ky | Water & waste | 1984 |
| Klockars-Produkt Kb | Real estate | 1989 |
| Kommanditbolag K. Wahlberg kommandiittiyhtiö | Manufacturing | 1979 |
| Kuusisaaren Geter Oy | Real estate | 2011 |
| Kvarnemo Consulting Ab | Professional & scientific | 2020 |
| Kvarten Ab | Real estate | 2019 |
| Ky Caravan Order Kb | Wholesale & retail | 1988 |
| Källberg Ab | Mining & quarrying | 2006 |
| Källbergs Grönsaker Ab | Agriculture & fishing | 1998 |
| Kåtong Lav Records Kb | Information & communication | 1986 |
| LANDETS GRÖNSAKER NÄRPES Ab | Agriculture & fishing | 2013 |
| LCA Investment Ab | Financial services | 1993 |
| LL & SS - Konstförlag Ab | Wholesale & retail | 1991 |
| Liljedal Invest Ab Oy | Financial services | 2015 |
| Lind Garden Ab | Wholesale & retail | 2025 |
| Lindemans Infra Oy Ab | Construction | 1989 |
| Lindéns Grönsaker Ab Oy | Agriculture & fishing | 2021 |
| Logicmod Ab | Real estate | 2019 |
| Luis Otavalo Öppet bolag | Wholesale & retail | 2004 |
| Läkarna -Lääkärit Närpes Ab/Oy | Health & social care | 2009 |
| MG Fitness Club Ab Oy | Real estate | 2026 |
| MainGro Ab | Agriculture & fishing | 2023 |
| Mattias Rönn Ab Oy | Administrative & support | 2021 |
| Mcons Oy Ab | Professional & scientific | 2019 |
| Mr Woofer Kb | Hospitality | 1990 |
| Måanoens Trädgård Ab Oy | Agriculture & fishing | 2018 |
| NJM Invest Ab Oy | Real estate | 2025 |
| NORDWELD SYSTEM Oy Ab | Manufacturing | 2018 |
| NW Fastighet Invest Ab Oy | Real estate | 2021 |
| Nicole & Jens öppet bolag | Manufacturing | 1994 |
| Nixells Transport & Service Öppet bolag | Transport & logistics | 1987 |
| Nordbergs byggnads och grönsaker Ab | Construction | 1994 |
| Nordweld Solutions Ab Oy | Administrative & support | 2026 |
| Nova Forest Ab Oy | Agriculture & fishing | 2016 |
| Numulus Ab | Manufacturing | 1989 |
| Nwe Network Engineering Oy Ab | Wholesale & retail | 1994 |
| Nygårds Optik Ab | Wholesale & retail | 2000 |
| Nygårds Ur & Guld Ab | Wholesale & retail | 2001 |
| När-Bok Ab | Wholesale & retail | 2023 |
| Närko Finland Ab | Wholesale & retail | 2002 |
| Närpes Bilcentral Öppet Bolag | Wholesale & retail | 1983 |
| Närpes Bilhall, Westerback Ab | Wholesale & retail | 1986 |
| Närpes Bokföringsbyrå Ab - Närpiön Tilitoimisto Oy | Professional & scientific | 1978 |
| Närpes Bostäder Ab - Närpiön Asunnot Oy | Real estate | 2007 |
| Närpes Centralantennandelslag | Information & communication | 1975 |
| Närpes Elservice Ab Oy | Financial services | 2025 |
| Närpes Fototjänst Hägglund kommanditbolag | Wholesale & retail | 1978 |
| Närpes Glassfabrik Ab | Manufacturing | 2021 |
| Närpes Golv Ab - Närpiön Lattia Oy | Wholesale & retail | 1975 |
| Närpes Idrottshall Ab | Arts & recreation | 2008 |
| Närpes Industrifastigheter Ab-Närpiön Teollisuuskiinteistöt Oy | Real estate | 2022 |
| Närpes Kockens Bar Öppet bolag | Hospitality | 2002 |
| Närpes Kultursmide Ab | Manufacturing | 2010 |
| Närpes Röjningstjänst Kb | Agriculture & fishing | 2008 |
| Närpes Rör Ab | Construction | 2021 |
| Närpes Shop - Asian Hot Curry, kommanditbolag | Wholesale & retail | 2012 |
| Närpes Sparbank Ab | Financial services | 2014 |
| Närpes TB-Service Kb | Wholesale & retail | 1992 |
| Närpes Vatten Ab | Water & waste | 1967 |
| Oy Advokatbyrå Becker & Becker Ab | Professional & scientific | 1991 |
| Oy Anders Berg Ab | Agriculture & fishing | 2008 |
| Oy Aqua Botnica Ab | Water & waste | 1993 |
| Oy Autoinvest Ab | Wholesale & retail | 1986 |
| Oy B & B Fastighetsförmedling - Kiinteistönvälitys Ab | Real estate | 1993 |
| Oy Bema Holding Ab | Manufacturing | 2005 |
| Oy Bema System Ab | Manufacturing | 2021 |
| Oy Botnia Polyprodukt Ab | Manufacturing | 1988 |
| Oy Botnia Press Point Ab | Manufacturing | 2014 |
| Oy CS Invest Ab | Real estate | 2016 |
| Oy Centenna Telekom Ab | Information & communication | 2022 |
| Oy Dama Consulting Ab | Professional & scientific | 1987 |
| Oy Electroteam Närpes Ab | Construction | 2005 |
| Oy Engelqvist Ab | Other services | 1982 |
| Oy Genitec Ab | Professional & scientific | 1993 |
| Oy Gevesta Ab | Administrative & support | 1969 |
| Oy Hannus Steel Ab | Manufacturing | 1999 |
| Oy Hortilab Ab | Manufacturing | 1999 |
| Oy Ingström Infra Ab | Construction | 2022 |
| Oy Kaj Komsi Möbler Ab | Wholesale & retail | 1996 |
| Oy Kaskisten Autokoulu - Kaskö Bilskola Ab | Financial services | 1986 |
| Oy Käännös- ja tulkkauspalvelu Mokoma Ab | Professional & scientific | 2008 |
| Oy LMNT elements Ab | Manufacturing | 2019 |