| 24 h Grillikioski Ahlström & Vertanen avoin yhtiö | Hospitality | 1995 |
| A&M Holding Ab | Professional & scientific | 2023 |
| Ab Acu-Fastigheter Oy | Real estate | 2015 |
| Ab Ahlskog Transport - Kuljetus Oy | Transport & logistics | 1991 |
| Ab Antother Oy Ltd | Wholesale & retail | 2019 |
| Ab Beck Fastigheter Oy | Real estate | 2018 |
| Ab CRJ-Transport Oy | Transport & logistics | 1993 |
| Ab Fatex Invest Oy | Real estate | 1985 |
| Ab Fatex Oy | Manufacturing | 2023 |
| Ab Ferromek Oy | Manufacturing | 2004 |
| Ab Fur - Enfors Oy | Agriculture & fishing | 1997 |
| Ab Hästöskata Oy | Hospitality | 1991 |
| Ab JoMiJo Oy | Manufacturing | 2026 |
| Ab KS Geoenergi Oy | Construction | 2009 |
| Ab KS Geokonsult Oy | Professional & scientific | 2013 |
| Ab Kronoby Konstis Oy | Arts & recreation | 1992 |
| Ab Kronoby Skrot - Kruunupyyn Romu Oy | Wholesale & retail | 1981 |
| Ab Laxström Oy | Manufacturing | 1971 |
| Ab Maijanpesi Oy | Agriculture & fishing | 2020 |
| Ab Plåtslageri Hellqvist & Snåre Oy | Construction | 1989 |
| Ab Påras Oy | Wholesale & retail | 1955 |
| Ab Q paint Oy | Manufacturing | 2003 |
| Ab Riskas Snickeri Oy | Manufacturing | 2002 |
| Ab Tandklinik Dentina Hammasklinikka Oy | Health & social care | 2008 |
| Ab Tom Sjölind Oy | Manufacturing | 2021 |
| Ahlskog Air Cargo Ab, Oy | Transport & logistics | 1999 |
| Aksir Ab Oy | Manufacturing | 1980 |
| Andelslaget Söderby Vatten | Water & waste | 1972 |
| BSK Bygg Ab | Construction | 2011 |
| Biskop / Dahlnäs Tork Öppet Bolag | Agriculture & fishing | 2010 |
| Björkens Gris Ab | Agriculture & fishing | 2009 |
| Björkens Jordbruksfastighet Ab | Agriculture & fishing | 2007 |
| Björkens Svingård Ab | Agriculture & fishing | 2002 |
| Björkkulla Gård Ab | Other services | 2021 |
| Björklund's Fastigheter Ab | Real estate | 2020 |
| Björklund´s Musteri Ab | Manufacturing | 2020 |
| Bröderna Lindgrens Fastigheter, öppet bolag | Manufacturing | 1989 |
| Bäckström & Son, Öppet Bolag | Manufacturing | 1980 |
| C. Storbjörk Transport Ab | Transport & logistics | 2024 |
| Clarimar Ab | Manufacturing | 2016 |
| Cleanheat Energy Oy | Energy | 2023 |
| Cygnel Tage Ab | Agriculture & fishing | 1996 |
| DB Mek Ab | Other services | 2021 |
| DS Transport Ky | Transport & logistics | 2001 |
| Dahlvik Invest Ab Oy | Real estate | 2019 |
| EMMA Invest Oy | Real estate | 2024 |
| Elsa Möbel & Interiör Ab Oy | Other services | 2024 |
| Enlavida Ab | Professional & scientific | 2021 |
| Erling & Sixten Grankull Pälsfarm Ab | Agriculture & fishing | 1983 |
| Fabriksaktiebolaget Kronoby | Manufacturing | 1911 |
| Fastighets Ab Knifsund | Real estate | 2016 |
| Fastighets Ab Kronoby Bostäder | Real estate | 2017 |
| Fastighets Ab Kronoby Godsterminal | Real estate | 2003 |
| Fastighets Ab Kronoby Hagabacka Kiinteistö Oy | Real estate | 2010 |
| Fastighetsservice och Begravningsbyrå Strandvall, öppet bolag | Administrative & support | 2007 |
| Finlands Byggnadsvårdscenter Ab - Suomen Rakennussuojelukeskus Oy | Construction | 1993 |
| Finntak Oy Ab | Manufacturing | 2023 |
| Forsnäs Energy Park AB | Professional & scientific | 2025 |
| Framtidens Snickeri Ab | | 2026 |
| GlutFood Ab | Wholesale & retail | 2017 |
| Glädjehälsan Ab | Administrative & support | 2017 |
| Granqvist Gård Ab | Other services | 2026 |
| Greco Service Ab | Manufacturing | 2003 |
| Greger Spiks Pälsfarm Ab | Agriculture & fishing | 1985 |
| HS Products Ab | Construction | 2002 |
| HT Recycling Oy | Water & waste | 2025 |
| HeaWyJoB Ab | Other services | 2024 |
| HÅÅL Ab | Wholesale & retail | 2021 |
| Hälls Garage Ab Oy | Other services | 2020 |
| InPlace Solutions Ab Oy | Information & communication | 2000 |
| J Björklunds Maskinservice Ab | Manufacturing | 2015 |
| J&M Dahlbacka Oy Ab | Professional & scientific | 2014 |
| J. Patana Oy | Wholesale & retail | 2015 |
| JTL Transport Ab | Transport & logistics | 2006 |
| Jeussen Monitoimi Ab | Manufacturing | 2021 |
| Joulupallo Dahlvik Ab Oy | Wholesale & retail | 2022 |
| K Lindvall Ab | Construction | 2017 |
| Katarina Byggtjänster OY | Construction | 2021 |
| Kiinteistö OY Kruunupyyn Lentohalli - Kronoby Flyghangar Fastighets AB | Real estate | 2005 |
| KS Geokiinteistö Oy | Real estate | 2013 |
| Kauppahuone Ihalainen Oy | Wholesale & retail | 2013 |
| Kb Ferro-Fastigheter Ky | Real estate | 1981 |
| Kotiapu hyvä mieli oy | Health & social care | 2023 |
| KrombiBo Ab | Real estate | 2026 |
| Kronoby Bokföringsservice Kb | Professional & scientific | 1989 |
| Kronoby Elverk Ab | Energy | 2014 |
| Kronoby Ensileringstjänst Ab | Agriculture & fishing | 2014 |
| Kronoby Fönsterhantverk Ab | Construction | 2021 |
| Kronoby Invest & Fastigheter Ab | Real estate | 2026 |
| Kronoby Vatten och Avlopp Ab | Construction | 1966 |
| Kronoby tröskbolag Ab | Agriculture & fishing | 2026 |
| Kronos Machinery Oy Ab | Manufacturing | 1957 |
| Kronovet Ab | Professional & scientific | 2016 |
| Kruunupyyn lentoaseman taksi Oy | Transport & logistics | 1995 |
| Ky Muurauspalvelu Loimutuli Kb | Construction | 1995 |
| Lillsunde Transport Ab | Transport & logistics | 2013 |
| Lindvall & Finnila öppet bolag | Construction | 2012 |
| Lybäck Entreprenad Ab | Agriculture & fishing | 2023 |
| M. Kiikeri Palvelut Oy | Other services | 2024 |
| MH-CON Ab | Professional & scientific | 2021 |