| FoGGly oy | Wholesale & retail | 2026 |
| Folkhälsans Utbildningsfastigheter Ab | Real estate | 2022 |
| Fondis Restaurants Oy | Hospitality | 2026 |
| Food Company-92 Kb | Hospitality | 1997 |
| Food Institute Finland Oy | Hospitality | 2022 |
| Food Point Vaasa Oy | Hospitality | 2024 |
| Food Truck Mafia Oy | Hospitality | 2021 |
| FoodFlix Oy | Hospitality | 2021 |
| Foodz - Corner Oy | Hospitality | 2009 |
| Forskningscentrum för Europeisk Flerspråkighet Öppet bolag | Professional & scientific | 2009 |
| Foto Airaksinen Oy | Wholesale & retail | 1977 |
| Fourth Step Oy | Financial services | 2011 |
| Fox Administer Oy | Financial services | 2026 |
| Foycom Oy | Information & communication | 1989 |
| Frans DGT Oy | Information & communication | 2018 |
| Frantzén Capital Oy | Professional & scientific | 2021 |
| Fray & NPD Oy | Health & social care | 1995 |
| Fredrik Nyberg Invest Ab | Financial services | 2019 |
| Frihet Capital Ab | Financial services | 2025 |
| Front Work FW Ab Oy | Construction | 2004 |
| FunSec Oy | Administrative & support | 2022 |
| FuseTwin Oy | Information & communication | 2018 |
| Fusion Four Oy | Wholesale & retail | 2025 |
| FutureLink Education Oy | Education | 2024 |
| Fynley oy | Wholesale & retail | 2026 |
| Fyrab Oy | Professional & scientific | 2026 |
| Fysiocenter Ostrobothnia Oy Ab | Health & social care | 2017 |
| Fysioterapia MediAskel Oy | Health & social care | 2012 |
| Fysioterapia TKT Oy | Health & social care | 2025 |
| Förmedlingsbyrå - Välitystoimisto Ingemar Tåg Ab/Oy | Real estate | 1989 |
| G C West Fastigheter Ab | Administrative & support | 2000 |
| G.E.A. Remonttipalvelut Oy | Construction | 1997 |
| GCR Finland Oy | Professional & scientific | 2025 |
| GET Group Ab | | 2026 |
| GHV finland Oy | Other services | 2018 |
| GRIT Governance Ab | Financial services | 2019 |
| GRIT Rahastoyhtiö Oy | Financial services | 2003 |
| GSE BESS 3 Oy | Professional & scientific | 2026 |
| Gastrolab kommandiittiyhtiö Hans Björknäs | Health & social care | 1983 |
| Gateway MGMT Oy | Professional & scientific | 2024 |
| Gatukök Ab Burger-Katukeittiö Oy | Hospitality | 2023 |
| Gearstore avoin yhtiö | Wholesale & retail | 2016 |
| GemGold Oy | Mining & quarrying | 2019 |
| Gemdale Limited, Suomen sivuliike | Mining & quarrying | 2017 |
| Gemtrade Finland Oy | Professional & scientific | 2020 |
| Genas Oy | Real estate | 2018 |
| Genexis Finland Oy Ab | Wholesale & retail | 1993 |
| Geo Accounting Oy | Professional & scientific | 1984 |
| Geonan Kotipalvelu Oy | Other services | 2020 |
| Gerbyn elintarvikekioski Ky | Wholesale & retail | 1987 |
| GeriEk Ab | Health & social care | 2019 |
| Giemme Trading & Consulting Ab | Wholesale & retail | 2012 |
| Glasek Oy | Construction | 2005 |
| Glimmer Invest Oy Ab | Real estate | 2011 |
| Global Fire Solutions AB Ltd | Professional & scientific | 2015 |
| Global Power Innovations, GPI Oy | Information & communication | 2025 |
| Globe Impex Oy | Wholesale & retail | 2019 |
| Globäckens vattenandelslag | Water & waste | 2014 |
| GlossGarage Oy | Other services | 2025 |
| Gold Rose Oy | Wholesale & retail | 2021 |
| Golf House Vaasa Oy | Arts & recreation | 2026 |
| Goodwind Oy | Construction | 2005 |
| Grassroots VSA Oy | Arts & recreation | 2020 |
| Gratianum Oy | Wholesale & retail | 2022 |
| Gray's Bakery Finland Oy | Wholesale & retail | 2026 |
| Great Bay Investments Ab | Financial services | 2008 |
| Green Change Consulting Oy | Professional & scientific | 2022 |
| Green Financial Partners Oy Ab | Professional & scientific | 2023 |
| Green Grass Holdings Oy | Financial services | 2024 |
| GreenTech Partner Innovation Ab | Information & communication | 2026 |
| Greenmed International Ab | Health & social care | 2014 |
| Grokka Games Oy | Information & communication | 2024 |
| Growsection Oy | Professional & scientific | 2021 |
| Gruus Ab | Manufacturing | 2022 |
| Gull-Invest Ab | Real estate | 1987 |
| Gummi-Invest Oy | Real estate | 2006 |
| GymitGear Oy | Arts & recreation | 2020 |
| Gynekologiasema Lilja Oy | Health & social care | 2008 |
| H. Lähdekorpi Oy | Financial services | 2017 |
| H.M. Rosenlöf Ab Oy | Health & social care | 2025 |
| HAME Kiinteistöt Oy | Real estate | 2020 |
| HC Construction Oy | Construction | 2026 |
| HEJM Mat Ab | Hospitality | 2018 |
| Henry Trading OY AB | Wholesale & retail | 1990 |
| HH-Atlas Oy | Professional & scientific | 2014 |
| HHD Entertainment Oy Ab | Arts & recreation | 2020 |
| HLO Express Vaasa Oy | Transport & logistics | 2022 |
| HMD-Group ky Hanko Marketing & Development | Professional & scientific | 1999 |
| HMP Home Management Products Oy | Professional & scientific | 1994 |
| HMT-Pro Oy | Wholesale & retail | 2007 |
| HOT Media Oy | Arts & recreation | 2026 |
| HP Farm Oy | Agriculture & fishing | 2018 |
| HR Satama Care Oy | Administrative & support | 2024 |
| HT Holding Oy | Professional & scientific | 2008 |
| Haajamo Consulting Oy | Real estate | 2026 |
| Haastavat Ratkaisut Oy | Professional & scientific | 2023 |
| Hackis Holding Oy | Financial services | 2024 |
| Hagström Invest Oy | Real estate | 2024 |
| Hahka Trade Oy | Wholesale & retail | 2021 |
| Hahto Music Oy Ltd | Arts & recreation | 2021 |