| Uudenmaan Herkku Oy | Manufacturing | 2013 |
| Uudenmaan Konehuolto Oy | Other services | 2010 |
| Uudenmaan Lattiarakenne Oy | Construction | 2014 |
| Uudenmaan Lähetit Oy | Transport & logistics | 2021 |
| Uudenmaan Lämpöasennus Oy | Construction | 2012 |
| Uudenmaan Musiikkikoulu Ky | Education | 2005 |
| Uudenmaan Ohutlevy Oy | Manufacturing | 2011 |
| Uudenmaan Painehuuhtelu Oy | Administrative & support | 2010 |
| Uudenmaan Peltityö Oy | Construction | 1987 |
| Uudenmaan Putkarit Oy | Construction | 2014 |
| Uudenmaan RST Työt Oy | Manufacturing | 2017 |
| Uudenmaan Rakennuskonsultti Oy | Construction | 1982 |
| Uudenmaan Raskaspesu Oy | Administrative & support | 2011 |
| Uudenmaan Salaojaurakointi Oy | Construction | 2019 |
| Uudenmaan Sähkölaitehuolto Oy | Manufacturing | 2019 |
| Uudenmaan Tilitieto Oy | Professional & scientific | 1990 |
| Uudenmaan Tilitoimisto Oy | Professional & scientific | 1977 |
| Uudenmaan Verkonrakennus Oy - Nylands Nätbyggnad Ab | Construction | 2016 |
| Uudenmaan Vesiturva Oy | Construction | 2012 |
| Uudenmaan Vihannes Oy | Manufacturing | 2014 |
| Uudenmaan Vuoto ja Saneeraus Oy | Construction | 2011 |
| Uudenmaan Ykköskone Oy | Construction | 1998 |
| Uudenmaan huoltotekniikka Oy | Manufacturing | 2007 |
| Uudenmaan kiinteistösiivous Oy | Administrative & support | 2014 |
| Uudenmaan psykoterapiakeskus Oy | Health & social care | 1992 |
| Uuma Yhtiöt Oy | Construction | 2012 |
| Uusimaa Holding Oy | Real estate | 2018 |
| Uusimaa Yhtiöt Oy | Professional & scientific | 2024 |
| V. Karjalainen Oy | Professional & scientific | 1996 |
| V.V.J. Huttunen Oy | Wholesale & retail | 2014 |
| VALMIK Oy | Wholesale & retail | 2013 |
| VELORAQ Oy | Transport & logistics | 2026 |
| Vmk-Kuljetus OY | Transport & logistics | 2013 |
| VNF management Oy | Administrative & support | 2021 |
| VT-Works Oy | Administrative & support | 2002 |
| ValCode Oy | Information & communication | 2020 |
| ValGroup Oy | Financial services | 2021 |
| Valhora Oy | Health & social care | 2021 |
| Vallinpääntien Teollisuuskiinteistöt Oy | Real estate | 2005 |
| Valoisa Konsultointi Oy | Administrative & support | 1994 |
| Valser Palvelut Oy | Construction | 2026 |
| Valtaamo Oy | Education | 2007 |
| Vannevelhot Oy | Manufacturing | 2016 |
| Vantaan Elektroniikkahuolto Ky | Other services | 1984 |
| Vantaan Ilmanvaihto Oy | Construction | 2019 |
| Vantaan Kukkapalvelu Oy | Wholesale & retail | 2014 |
| Vantaan LVI-Asennus Kanerva Oy | Construction | 2013 |
| Vantaan Laskenta Oy | Professional & scientific | 2007 |
| Varjopuu Oy | Manufacturing | 1992 |
| VasWare Oy | Information & communication | 2023 |
| Vasaraveljet Oy | Construction | 1994 |
| Vastuullinen Valmennus Oy | Arts & recreation | 2021 |
| Vattery Services avoin yhtiö | Transport & logistics | 2019 |
| Vau Invest Oy | Financial services | 2026 |
| VeKiLa Oy | Professional & scientific | 2011 |
| VeVa Sweet Oy | Wholesale & retail | 2024 |
| VeeKoo Kuljetus Oy | Transport & logistics | 2012 |
| VegeGoGo Oy | Wholesale & retail | 2020 |
| Vehendo Oy | Professional & scientific | 2015 |
| Vehix Oy | Construction | 2022 |
| Vekaravintti Oy | Wholesale & retail | 2011 |
| Veko Digital Oy | Professional & scientific | 2026 |
| Venduto Oy | Professional & scientific | 2023 |
| Ventus Oy | Real estate | 2006 |
| Verbier Invest 3 Oy | Construction | 2024 |
| Verbier Invest Oy | Construction | 2009 |
| Verderak Oy | Construction | 2022 |
| Verotar Ky | Professional & scientific | 2015 |
| Verserv Oy | Construction | 2015 |
| Vestonet Oy | Information & communication | 2022 |
| Vetokonsultit Oy | Wholesale & retail | 1984 |
| Vevina Oy | Financial services | 2017 |
| Vialuksi Oy | Wholesale & retail | 2008 |
| Victoria Cleaning Ky | Administrative & support | 1993 |
| Vihanto palvelut Oy | Professional & scientific | 2006 |
| Viherrakennusliike Sundman Ky | Administrative & support | 1992 |
| Vihto Oy | Information & communication | 2019 |
| Viihdetaikurit Oy | Education | 2011 |
| Villa Renzo Oy | Real estate | 1985 |
| Villex Oy | Construction | 2015 |
| Vimare Oy | Construction | 1990 |
| Vink Finland Oy | Wholesale & retail | 1971 |
| Vink Finnish Properties Oy | Real estate | 2016 |
| Viraali Oy | Professional & scientific | 2017 |
| Virittäjä Ville Oy | Manufacturing | 2024 |
| Virma Oy Graafisen suunnittelun toimisto | Professional & scientific | 1993 |
| Vivat Oy | Construction | 2012 |
| Vivat Palvelut Oy | Construction | 2012 |
| Vivat Pirkanmaa OY | Construction | 2019 |
| Vivat Varsinais-Suomi OY | Construction | 2019 |
| Voice Makers Oy | Information & communication | 1994 |
| Voimin Oy | Health & social care | 2019 |
| Voutilainen & Rantanen Oy | Financial services | 2020 |
| Vuosaaren Kuljetus Oy | Transport & logistics | 2023 |
| Vura Garage Oy | Wholesale & retail | 2025 |
| Vähämäki Invest Oy | Administrative & support | 2023 |
| WEST Invest Group Oy | Manufacturing | 1961 |
| WFZ Sushi OY | Hospitality | 2018 |
| WL Coaching Finland Oy | Education | 2023 |
| WLM-Ravintolat Ky | Hospitality | 2009 |