| ESR Group Ltd | Extraterritorial | 2025 |
| Estecha Ireland Ltd | Wholesale & retail | 2025 |
| Euniqcrafts Ltd | Wholesale & retail | 2023 |
| Euro Auto Salvage Ltd | Wholesale & retail | 2000 |
| Evander Hopper Design Limited | Manufacturing | 2017 |
| Evolve Physio Ltd | Arts & recreation | 2024 |
| Excel Cabs & Party Buses Ltd | Transport & logistics | 2019 |
| Excel Genetics Limited | Extraterritorial | 2023 |
| Excel Imports Ltd | Wholesale & retail | 2019 |
| F.J.Quinn & Co. Ltd | Professional & scientific | 2023 |
| F2F Health & Fitness Ltd | Arts & recreation | 2022 |
| Fabric Library Ltd-The | Real estate | 1977 |
| Fabumedia Ltd | Arts & recreation | 2023 |
| Fairhill Construction Limited | Construction | 1978 |
| Fairyburn Ltd | Real estate | 2021 |
| Fartown Wind Ltd | Energy | 2012 |
| Faulkner & Brown Ltd | Real estate | 2025 |
| FDS Contracts Ltd | Construction | 2024 |
| Feegarron Properties Ltd | Real estate | 2026 |
| Fendek Composite Ltd | Wholesale & retail | 2021 |
| Ferb Promotions Ltd | Information & communication | 2022 |
| FG7 Limited | Wholesale & retail | 2000 |
| FH Works Ltd | Manufacturing | 2023 |
| Fiftyeightchurchstreet Ltd | Financial services | 2024 |
| Financial Solutions MID Ulster Ltd | Financial services | 2019 |
| Finch Retailing (Millvale) Limited | Wholesale & retail | 2020 |
| Fineline Cabinetry Ltd | Manufacturing | 2025 |
| Finmull Holdings Ltd | Hospitality | 2025 |
| Finthos Ltd | Professional & scientific | 2025 |
| Fior Fion Ltd | Wholesale & retail | 2024 |
| Fire Safe Fire Protection Services Ltd | Public administration | 2021 |
| Fischers Granite Ltd | Wholesale & retail | 2014 |
| Flame (N.I.) Ltd | Wholesale & retail | 2018 |
| FLUID2 Ltd | Wholesale & retail | 2019 |
| FM Cladding & Roofing Ltd | Construction | 2023 |
| FM Properties Investment Ltd | Real estate | 2025 |
| Foley Huck Ltd | Wholesale & retail | 2024 |
| Food for Thought (Accounting Solutions) Limited | Professional & scientific | 2020 |
| Food for Thought (Global) Limited | Information & communication | 2019 |
| Food for Thought (Holdings) Limited | Professional & scientific | 2021 |
| Forensic VET Ltd | Professional & scientific | 2014 |
| FOX Bros Contracts Limited | Construction | 2012 |
| FOX Bros Ltd | Construction | 2018 |
| Free Range Escapes Limited | Hospitality | 2023 |
| Free Range Escapes NI Limited | Hospitality | 2023 |
| Friends of Charis Limited | Wholesale & retail | 2011 |
| From Acorns Estate Planning Ltd | Professional & scientific | 2025 |
| FSL Electronics Ltd | Manufacturing | 1988 |
| FSL Scoreboards Ltd | Manufacturing | 2016 |
| Funland Arcades Ltd | Arts & recreation | 2018 |
| Furniture Store (NI) Limited | Wholesale & retail | 2015 |
| G Collins Electrical Ltd | Construction | 2011 |
| G Leonard Ltd | Construction | 1996 |
| G Leonard Properties Limited | Real estate | 2023 |
| G Leonard Refractories Ltd | Construction | 2017 |
| G Mcaleer Contracts Limited | Construction | 2014 |
| G-Old Community Partnership | Education | 2001 |
| G.F. O'Brien (NI) Limited | Wholesale & retail | 2008 |
| G2M2S Limited | Professional & scientific | 2018 |
| G6 Design IOI Ltd | Professional & scientific | 2024 |
| Gallagh Plastering Contracts Ltd | Construction | 2023 |
| Galvally Properties Limited | Construction | 2007 |
| Garmore Properties Ltd | Real estate | 2015 |
| Garrison Hill Wind Ltd | Energy | 2016 |
| GC Sales Ltd | Wholesale & retail | 2024 |
| GDC Ltd | Construction | 2017 |
| GEC Contracting Limited | Extraterritorial | 2006 |
| Gerwood Services Ltd | Households | 2025 |
| GIB Solutions NI Limited | Construction | 2025 |
| Gillen Joinery Contracts Ltd | Construction | 2026 |
| Girvan Utility Services Ltd | Construction | 2026 |
| Give and Go Sports Ltd | Wholesale & retail | 2021 |
| Glebe Insulation Ltd | Construction | 2023 |
| Glen 2024 Limited | Real estate | 2024 |
| Glenavon House Hotel (1982) Limited | Hospitality | 1982 |
| Glenbeg Farm Limited | Agriculture & fishing | 2011 |
| Glengomna Consultancy Limited | Professional & scientific | 2012 |
| Glenn Allen Ltd | Wholesale & retail | 2013 |
| Glenview Pre-School Centre Ltd | Health & social care | 2019 |
| GLO Lettings Limited | Real estate | 2020 |
| Globe Equipment Ltd | Manufacturing | 2024 |
| Gmcc Chatel Limited | Real estate | 2022 |
| GMT Furniture Ltd | Manufacturing | 2006 |
| GMT Metalworks Ltd | Manufacturing | 2020 |
| Golden Phoenix Cookstown Ltd | Hospitality | 2019 |
| Gorilla Karts NI Limited | Wholesale & retail | 2025 |
| Gortacar Poultry Limited | Agriculture & fishing | 2011 |
| Gortagharn Enterprises Ltd | Transport & logistics | 2025 |
| Gortagold Equestrian Limited | Wholesale & retail | 2019 |
| Gortnaskey Enterprises Limited | Professional & scientific | 2012 |
| Gortreagh Consulting Limited | Professional & scientific | 2023 |
| Gortreagh Printing Limited | Manufacturing | 2018 |
| GPC Kitchens Ltd | Manufacturing | 2023 |
| Grace Scott Art Ltd | Manufacturing | 2021 |
| Gracefield Property Management Company Ltd | Households | 2010 |
| Graham Bell & SON Ltd | Transport & logistics | 2021 |
| Grand Slam Golf Tours Ltd | Administrative & support | 2025 |
| Grange Renewables Ltd | Energy | 2016 |
| Green Energy Hub NI Ltd | Energy | 2021 |
| Greenbrooke Developments Ltd | Extraterritorial | 2020 |