| Rakennus Järvenoja Oy | Construction | 2006 |
| Rakennus-Huusko Ky | Construction | 1984 |
| Rakennusliike Koivu Oy | Construction | 2017 |
| Rakennuspalvelu Teknorak Oy | Construction | 1994 |
| Rakennustyöt Uusi-Seppälä Oy | Construction | 2025 |
| Rakennusurakointi Niilo Lohilahti Oy | Construction | 1991 |
| Ramin Autohuolto Ky | Other services | 2010 |
| Raskashuolto Kannisto Oy | Other services | 2013 |
| Rastilan Vesiosuuskunta | Water & waste | 2003 |
| Ratsutila Suomela Avoin yhtiö | Arts & recreation | 2010 |
| Ravintola Bambu Oy | Hospitality | 2018 |
| RedHippo Oy | Arts & recreation | 2024 |
| Reneo Oy | Professional & scientific | 2025 |
| Rentoutuskauppa.fi Oy | Wholesale & retail | 2022 |
| Rentovire Oy | Education | 2025 |
| Riikka Moilanen Oy | Professional & scientific | 2020 |
| Ruoka & Koti Media Oy | Information & communication | 2019 |
| S&J Rakennuspalvelu Oy | Construction | 2020 |
| SI-Capital Oy | Financial services | 2024 |
| SJP Partners Oy | Administrative & support | 2019 |
| Sokeriportti OY | Professional & scientific | 2010 |
| SPM huolto Oy | Manufacturing | 1993 |
| ST Service Oy | Manufacturing | 2025 |
| Sa-Ke-As Oy | Manufacturing | 1998 |
| Sahadventures Oy | Education | 2026 |
| Sakeplast Oy | Manufacturing | 2004 |
| Salaojitus & Tarvike Oy | Construction | 1977 |
| Satavan Kyläkauppa Oy | Wholesale & retail | 2010 |
| Scandinavian Kings avoin yhtiö | Hospitality | 2015 |
| Seppo Autotarvike Oy | Wholesale & retail | 1993 |
| Siivouspalvelu Pirjo & Susanna Ky | Administrative & support | 2001 |
| Sijoitusosakeyhtiö Saarelainen Oy | Financial services | 2005 |
| Sijoitusveljet Oy | Financial services | 1987 |
| Sinin Ateriapalvelu Oy | Hospitality | 2022 |
| Slowmoney Oy | Financial services | 2020 |
| Sotkan Ravintola Oy | Hospitality | 2023 |
| Stall Forsström Oy | Agriculture & fishing | 2022 |
| Studio Sinua Oy | Manufacturing | 2024 |
| Sudenkorpi Oy | Agriculture & fishing | 2014 |
| Sumus Magis Ky | Construction | 1999 |
| Sun Hotels Oy | Hospitality | 1985 |
| Suomen Epoksilattiat Oy | Construction | 1996 |
| Suomen Tilausajopalvelu Oy | Information & communication | 1990 |
| Suomen Vahinkoturva Oy | Information & communication | 2024 |
| Sähkö-Jore Oy | Construction | 1997 |
| Sähkö-Lvi TEOT Oy | Construction | 2019 |
| Sähköaivo Oy | Wholesale & retail | 1988 |
| T-Lomake Oy | Professional & scientific | 2018 |
| T. Kirjavainen Oy | Real estate | 2024 |
| T.M.T. Account Balance Oy | Professional & scientific | 2008 |
| TECHlinna Oy | Construction | 2011 |
| TLV-palvelut Oy | Other services | 2015 |
| TM Business Consulting Oy | Other services | 2021 |
| TM-Center Oy | Wholesale & retail | 2006 |
| TRK Kuljetus Ky | Construction | 2012 |
| Taitoportti Oy | Wholesale & retail | 2018 |
| Taivasmäen Sora Oy | Wholesale & retail | 2009 |
| Takuuviihde Oy | Hospitality | 1989 |
| Talotekniikka Backman Oy | Construction | 2017 |
| Tantlaser Oy | Manufacturing | 2026 |
| Tapahtuu Oy | Hospitality | 2021 |
| Teevaara Oy | Real estate | 2000 |
| Teijon Tuulenpesä Oy | Real estate | 1988 |
| Tekotec Oy | Manufacturing | 2017 |
| Telli Oy | Hospitality | 2025 |
| Teollisuuden Korjauspalvelut J. Laurell Oy | Manufacturing | 1998 |
| Terho Lehtonen Oy | Construction | 1996 |
| Terravia Oy | Real estate | 1997 |
| Tervakosken Autokoulu Oy | Education | 2004 |
| The Art Listing Oy | Information & communication | 2019 |
| Tienviitta - yhdessä eteenpäin Ky | Health & social care | 2024 |
| Tiina Kähäri Oy | Wholesale & retail | 1999 |
| Tilintarkastustoimisto Vesa Kivilä Oy | Professional & scientific | 1993 |
| Tinakatu Invest Oy | Wholesale & retail | 1995 |
| Toivolan Talli Oy | Agriculture & fishing | 2021 |
| Tourman Finland Oy | Administrative & support | 2008 |
| Tristonoma Oy | Financial services | 1995 |
| Tume-Agri Oy | Manufacturing | 1991 |
| Turengin Aluepuhdistus Oy | Administrative & support | 1989 |
| Turengin Autokoulu Oy | Education | 1992 |
| Turengin Autopeltisepät, kommandiittiyhtiö | Other services | 1989 |
| Turengin Erikoiskone Oy | Manufacturing | 1987 |
| Turengin Fysiopiste avoin yhtiö | Health & social care | 2006 |
| Turengin Kestovoima Oy | Wholesale & retail | 1980 |
| Turengin Korjauspaja Ky | Other services | 1980 |
| Turengin Nostolava Oy | Manufacturing | 1993 |
| Turengin Rengas-Kiinteistöt Oy | Real estate | 2014 |
| Turengin Sähkötalo Oy | Construction | 2001 |
| Turengin Taksipalvelu Oy | Transport & logistics | 2024 |
| Turengin Terähuolto Oy | Manufacturing | 2003 |
| Turengin Tilikeskus Oy | Professional & scientific | 2020 |
| Turengin Wanha Asema Oy | Hospitality | 2018 |
| Turengin huoltoasema Oy | Hospitality | 2023 |
| Turenki Records Oy | Information & communication | 2010 |
| Turkal Palvelut Oy | Hospitality | 2021 |
| Tähtihoiva Oy | Health & social care | 2019 |
| Tähtikaari Oy | Information & communication | 2009 |
| Unelmatekijät Oy | Arts & recreation | 2017 |
| Urheiluhieroja Jouni Nieminen Oy | Health & social care | 2021 |
| V&S Collective Oy | Professional & scientific | 2026 |