| Erne Boat Hire Limited | Arts & recreation | 2016 |
| ESK Property Belfast Ltd | Real estate | 2024 |
| Essex Court Management (Carrickfergus) Limited | Households | 1989 |
| ETC Furniture Ltd | Wholesale & retail | 2022 |
| European Mint Ltd | Wholesale & retail | 2024 |
| Everybody Loves Rita Ltd | Information & communication | 2022 |
| Evolvebpm Ltd | Information & communication | 2024 |
| Exodus Insolvency Ltd | Administrative & support | 2022 |
| Exterior Care N.I Cleaning and Restoration Limited | Administrative & support | 2025 |
| Eyes on the Prize Competitions Ltd | Arts & recreation | 2026 |
| Fairco Limited | Construction | 2022 |
| Fairco Trade Frames Limited | Manufacturing | 2021 |
| Falcon Ridge Management Limited | Households | 2008 |
| Fallow AER Limited | Manufacturing | 2024 |
| Fantastic Scones Ltd | Wholesale & retail | 2021 |
| Fastfoods Larne Ltd | Hospitality | 2023 |
| Feng 86 Ltd | Hospitality | 2022 |
| Fergus Flutes N.I Ltd | Manufacturing | 2023 |
| Fergus Upholstery Ltd | Manufacturing | 2015 |
| Fergus Windows (N.I.) Ltd | Construction | 2017 |
| FFF Stuart Bell Limited | Arts & recreation | 2025 |
| Find Insurance NI Ltd | Financial services | 2007 |
| Finlay Property Management Ltd | Real estate | 2016 |
| Fish Management Systems Ltd | Agriculture & fishing | 2019 |
| Fishermans Mews Management Company Limited | Households | 2007 |
| Fisherwick Mews Services Limited | Extraterritorial | 1989 |
| Fit House Training CIC | Arts & recreation | 2024 |
| FIX Fella Limited | Wholesale & retail | 2021 |
| Flooring Contracts Ireland Ltd | Other services | 2011 |
| Florence Care First Ltd | Health & social care | 2024 |
| Flow Automations Ltd | Professional & scientific | 2025 |
| Flower Mill Ltd | Real estate | 2021 |
| Flux Games Ltd | Information & communication | 2022 |
| Focus Windows NI Limited | Construction | 2008 |
| Ford Sports Promotions Ltd | Arts & recreation | 2023 |
| Forge Manor Management Limited | Households | 2016 |
| Foxy Tastes Ltd | Hospitality | 2025 |
| Fresh Ventilation Ltd | Energy | 2019 |
| Fulton AMC (N.I.) Limited | Professional & scientific | 2025 |
| Furniture Direct (NI) Limited | Wholesale & retail | 2003 |
| FURNITURE4U(N.I.) Ltd | Wholesale & retail | 2012 |
| Futsal Focus Ltd | Information & communication | 2016 |
| Fybr Interactive Ltd | Professional & scientific | 2024 |
| G45 Fitness CIC | Arts & recreation | 2025 |
| G45 Holdings Ltd | Financial services | 2023 |
| Gaga Boba NI Food Ltd | Hospitality | 2024 |
| Galway Brothers Limited | Wholesale & retail | 1971 |
| Gareth Mills Estate Agents Ltd | Real estate | 2025 |
| Gareth Mills Rental Agents Ltd | Real estate | 2025 |
| GAS & Controls Ltd | Manufacturing | 2004 |
| Gastech (N.I.) Ltd | Administrative & support | 2016 |
| Gcme Limited | Professional & scientific | 2025 |
| Geleeaik Limited | Wholesale & retail | 2026 |
| GG Vent Ltd | Construction | 2026 |
| GHS Engineering Ltd | Administrative & support | 2016 |
| GIB22BON Ltd | Transport & logistics | 2021 |
| GID-1 Ltd | Manufacturing | 2025 |
| Gillian Johnson Limited | Wholesale & retail | 2019 |
| Gilmour & Co Limited | Professional & scientific | 2013 |
| Gimme Golf Agency Ltd | Arts & recreation | 2023 |
| Giraffe Associates Ltd | Professional & scientific | 2020 |
| Give Apples and Smile Ltd | Wholesale & retail | 2025 |
| Glean Fitness (NI) Ltd | Arts & recreation | 2024 |
| Glebe Close Management Company Ltd | Households | 2021 |
| Glen Court Apartments Glengormley Limited | Households | 2007 |
| Glen Manor Apartments Limited | Households | 2003 |
| Glenariff Apartments Limited | Households | 2003 |
| Glenfall Mews Ltd | Extraterritorial | 2007 |
| Glenhouse Management Co. Ltd | Households | 1998 |
| Glenlynden Ltd | Households | 2021 |
| Glenlyon Manor Management Co. Ltd | Extraterritorial | 2008 |
| Glenmorne Accountancy Services Ltd | Professional & scientific | 2020 |
| Globriit Ltd | Information & communication | 2017 |
| Glow by Emma Ltd | Other services | 2024 |
| GM Energy Management Ltd | Professional & scientific | 2020 |
| GMN Motorsport Ltd | Manufacturing | 2015 |
| Golden Hands Services Ltd | Hospitality | 2025 |
| Governors Place Management Limited | Real estate | 2005 |
| Grand Jury Court Management Limited | Households | 2002 |
| Granshe Limited | Professional & scientific | 2018 |
| Greenan Gate Manco Limited | Households | 2023 |
| Greenisland Body Repair Ltd | Wholesale & retail | 2024 |
| Greenisland Chippy Limited | Hospitality | 2016 |
| Greenshark Engineering Ltd | Manufacturing | 2021 |
| Greystone Properties Investment Limited | Real estate | 2025 |
| Gscr Limited | Financial services | 2025 |
| GT Interior Solutions Ltd | Construction | 2024 |
| Gullygully Ltd | Hospitality | 2017 |
| H.S.K Engineering Services Ltd | Manufacturing | 2023 |
| Hadlow Management Company Limited | Households | 2014 |
| Hadlow Park Management Company Limited | Households | 2019 |
| Halftown Management Company Limited | Households | 2020 |
| Halo Beauty Carrick Ltd | Other services | 2018 |
| Halo Hairdressing Carrick Ltd | Other services | 2018 |
| Hampshire Hall Management Company Limited | Real estate | 2023 |
| Happy Hounds Carrickfergus Ltd | Agriculture & fishing | 2020 |
| Harbour Dragon Limited | Hospitality | 2011 |
| Harron Framing Limited | Wholesale & retail | 2017 |
| Harwood 16 Limited | Construction | 2014 |
| Hashtag Shakes Ltd | Hospitality | 2018 |