| Etelä-Suomen Lehtipalvelut Ky | Professional & scientific | 1996 |
| Euro-Talli Oy | Agriculture & fishing | 1994 |
| Evere Oy | Wholesale & retail | 2009 |
| Evikoski Oy | Construction | 2023 |
| FANtastic Memorabilia Oy | Arts & recreation | 2018 |
| FC Haka Oy | Arts & recreation | 2008 |
| FI-P&C Oy | Manufacturing | 2016 |
| FamCare Group Oy | Health & social care | 2017 |
| Fantasos Oy | Wholesale & retail | 2021 |
| Fashion Duo Oy | Wholesale & retail | 2024 |
| Fenix Marin Oy | Manufacturing | 2004 |
| Festival Food Company Oy | Hospitality | 2025 |
| Fin Sähkötekniikka Oy | Construction | 2010 |
| Finland Hansikas Oy | Wholesale & retail | 1996 |
| Fixmad Oy | Construction | 2023 |
| Flyk Oy | Information & communication | 2020 |
| Focus Main Point Oy | Education | 2011 |
| Foreto Oy | Professional & scientific | 2007 |
| Foto-Heino Ky | Wholesale & retail | 1987 |
| Foxhill Tech Ltd Oy | Wholesale & retail | 2014 |
| FullFocus Coaching Oy | Education | 2020 |
| GR-Tuotteet Oy | Financial services | 2016 |
| Garden Elf Oy | Construction | 2017 |
| Gate Of India Oy | Hospitality | 2021 |
| Gens Oy | Education | 2008 |
| Ghaleb Oy | Hospitality | 2024 |
| Green Royal Oy | Hospitality | 2023 |
| Green2eat Innovations Oy | Manufacturing | 2026 |
| Grilli-Immonen Avoin yhtiö | Hospitality | 1983 |
| Gyberhoro Oy | Arts & recreation | 2025 |
| H.B. Fuller Finland Oy | Wholesale & retail | 1994 |
| H.B. Fuller Finland Production Oy | Manufacturing | 2015 |
| HANKUU Service Oy | Professional & scientific | 2019 |
| HC House Oy | Professional & scientific | 2021 |
| HETI-Toiminta Osuuskunta | Administrative & support | 2015 |
| HP vakuutus oy | Financial services | 2017 |
| HRT Racing OY | Other services | 2023 |
| HW-Autopaja Oy | Other services | 2025 |
| Hakafood Cafe Oy | Hospitality | 2018 |
| Hakafood Oy | Manufacturing | 2002 |
| Halkova Oy | Agriculture & fishing | 2018 |
| Hallintopalvelut Granö Oy | Administrative & support | 2020 |
| Halliosakeyhtiö Ka-Ri | Real estate | 1986 |
| Hammaslaboratorio Painilainen Vesa Oy | Manufacturing | 2010 |
| Hammaslääkäri Jari Hoikkala Oy | Health & social care | 2024 |
| Hammaslääkäriasema Hampaan pojat Oy | Health & social care | 2023 |
| Hampaan pojat Oy | Health & social care | 2022 |
| Happy Creative Oy | Professional & scientific | 2023 |
| Harjurannan kone ja kuljetus oy | Other services | 2019 |
| Haukkumaa Oy | Other services | 2021 |
| Hautaustoimisto Savolahti Oy | Other services | 1953 |
| Hellsten & Co. Oy | Construction | 1989 |
| Helmi Hair Wellness Spa Oy | Other services | 2019 |
| Helmi Learning Oy | Education | 2022 |
| Helmu-Welding Oy | Manufacturing | 2026 |
| Helsingin automaatiohuolto- ja asennus oy | Construction | 2022 |
| Hemark Oy | Construction | 2013 |
| Hemic Oy | Health & social care | 2012 |
| Henkilöstöpalvelut Sierra Oy | Administrative & support | 2022 |
| Henrilli avoin yhtiö | Wholesale & retail | 2006 |
| Hevospalvelut Camilla Räsänen Oy | Agriculture & fishing | 2026 |
| Hienopuusepäntyö Nikander Oy | Manufacturing | 2018 |
| High Up Holding Oy | Financial services | 2022 |
| Hinausautot Suontausta Oy | Transport & logistics | 2017 |
| Hip-o-deli Oy | Manufacturing | 1995 |
| Hipova Oy | Professional & scientific | 2022 |
| Hirsiveistämö P & M avoin yhtiö | Construction | 2023 |
| Hitsas Oy | Manufacturing | 1991 |
| HiusDuo Valkeakoski Oy | Other services | 2021 |
| Hiuspalvelu Apia Oy | Other services | 1985 |
| Hoihu Oy | Health & social care | 2019 |
| Hoivapalvelu Aune Oy | Health & social care | 2006 |
| Huhtala Consulting Oy | Professional & scientific | 2020 |
| Huhtala Holdings Oy | Financial services | 2020 |
| Huilaamo Oy | Real estate | 2022 |
| Huilata Oy | Hospitality | 2024 |
| Huoltokanava Juvonen Oy | Wholesale & retail | 2013 |
| Huoltopalvelu J. Nurmi Oy | Manufacturing | 1997 |
| Huovinen Brothers Oy | Real estate | 2009 |
| Hypap Oy | Manufacturing | 1981 |
| Hyvät Kyydit Oy | Transport & logistics | 2009 |
| Hämeen Asennus Oy | Manufacturing | 1989 |
| Hämeen Rakennusurakointi Oy | Construction | 1987 |
| Iam Holdings OY | Information & communication | 2014 |
| IODO Oy | Information & communication | 2024 |
| IV-Säätö J.Pajunen Oy | Construction | 2017 |
| Ihas Holding Oy | Financial services | 2024 |
| Iiro Mulari Oy | Health & social care | 2022 |
| Ink House Oy | Other services | 2020 |
| Innote Oy | Arts & recreation | 2014 |
| Innowonni Oy | Arts & recreation | 2009 |
| Insinööritoimisto Suomen Devtec Oy | Wholesale & retail | 1987 |
| Isännöinti Peltonen Oy | Real estate | 2020 |
| J & M Eklund Oy | Wholesale & retail | 2001 |
| J. Tavela ja Kumpp. Ky | Transport & logistics | 1984 |
| JAMA Tuotanto Oy | Financial services | 2024 |
| JHK-Koneistus Oy | Manufacturing | 2017 |
| JJML Trading Oy | Wholesale & retail | 2023 |
| JK-Autosähkö Oy | Other services | 1995 |
| JLK Group Oy | Education | 2023 |