| Ab Ess-Maskin Oy | Construction | 1977 |
| Ab Esse Läkartjänst Oy | Health & social care | 1989 |
| Ab Esse Vatten | Water & waste | 1972 |
| Ab Horse-Ess Oy | Wholesale & retail | 2002 |
| Ab Kamek Oy | Wholesale & retail | 2012 |
| Ab Kjellman & Co | Wholesale & retail | 1961 |
| Ab Kungskök - Kuningaskeittiöt Oy | Construction | 1995 |
| Ab Mauritz Consulting Oy | Professional & scientific | 2006 |
| Ab O.Tikkakoski Oy | Construction | 2009 |
| Ab T. Muukkonen Oy | Other services | 1996 |
| Ab Wifotek Oy | Manufacturing | 2006 |
| Alcamo Oy | Hospitality | 2019 |
| Autocirc Battery Recycling Finland Ab | Manufacturing | 2022 |
| Autocirc Finland Oy | Real estate | 2021 |
| B & J Kanckos Ab | Transport & logistics | 1979 |
| B.Pettersson Ab Oy | Construction | 2021 |
| ChainHydro Ab Oy | Manufacturing | 2023 |
| EE Investment Ab Oy | Real estate | 2021 |
| ESS-shine öppet bolag | Manufacturing | 1995 |
| Elfirma K & T Borgmästars | Construction | 1990 |
| Esse Bybutik Ab Oy | Wholesale & retail | 2026 |
| Esse Elektro-Kraft Ab | Energy | 1925 |
| Esse Elektro-Services Ab | Energy | 2026 |
| Esse Hallen Ab | Arts & recreation | 2015 |
| Esse Parti Ab | Wholesale & retail | 2003 |
| Esse Solar and Energy Park Ab | Energy | 2022 |
| Esse Veterinärtjänster Ab | Professional & scientific | 2024 |
| FarmEss Ab | Manufacturing | 2023 |
| Fastighets Ab Eken i Esse | Real estate | 2016 |
| Fias Hembränt, öppet bolag | Manufacturing | 1994 |
| Finells Holding Ab | Financial services | 2020 |
| Finells Miljöterminal Ab | Real estate | 2012 |
| GfPA Finland Oy | Professional & scientific | 2000 |
| Höyry Löyly Oy | Wholesale & retail | 2016 |
| Janfo Ab | Agriculture & fishing | 1994 |
| Johan Ahlvik Ab | Construction | 2018 |
| Konrands Ab | Professional & scientific | 2017 |
| Kopari Ab | Financial services | 1989 |
| Kustex ab | Construction | 2026 |
| Ky Elofloor Kb | Manufacturing | 1977 |
| Ky Gemec Products Kb | Manufacturing | 1991 |
| Linnanmäki Trading Oy | Wholesale & retail | 2022 |
| Ljungs skogsmaskiner, Boris och Harry Ljung | Agriculture & fishing | 1988 |
| M & S Entreprenad Ab | Administrative & support | 2001 |
| Marias Hemservice Oy Ab | Health & social care | 2019 |
| Modul Tech Ab Åkerlund | Manufacturing | 2007 |
| Nykung Forest Ab | Agriculture & fishing | 2012 |
| Nykungs Metall Ab Oy | Manufacturing | 2016 |
| Nykungs Verkstad Ab Oy | Manufacturing | 2001 |
| Oy Varax-Products Ab | Manufacturing | 1992 |
| Petterssons Trädgård Ab | Agriculture & fishing | 1986 |
| Quickline Esse Ab | Transport & logistics | 2020 |
| Rex Trans Ab Oy | Transport & logistics | 2017 |
| Ris-Esset Ab Oy | Agriculture & fishing | 2000 |
| Sewel öppet bolag | Construction | 2002 |
| Snårbackas Lastservice Ab | Construction | 1989 |
| Spruce Hill Woodwork Oy Ab | Professional & scientific | 2014 |
| Torrent Bison Ab | Agriculture & fishing | 2018 |
| Transportfirma B & M Sundqvist öppet bolag | Transport & logistics | 2000 |
| Urbanfeeders in Finland AB | Wholesale & retail | 2016 |
| Vadabacka Tork, öppet bolag | Agriculture & fishing | 1984 |
| Vattenandelslaget Pirilö Norra & Östra | Water & waste | 2004 |
| Viddmarkgård Ab | Agriculture & fishing | 2004 |
| Vigulantia Ab | Professional & scientific | 1995 |
| WN Maskin öppet bolag | Wholesale & retail | 2001 |
| West Elektriska Ab | Construction | 1983 |
| Wärns Metall Ab | Manufacturing | 1996 |
| Ähtävän Fysio Oy | Health & social care | 1990 |