| Ganette Limited | Information & communication | 2011 |
| Gardendale Limited | Real estate | 2015 |
| Garjen Properties Ltd | Real estate | 2016 |
| Gary Alexander Ltd | Financial services | 2003 |
| Gascal Ltd | Other services | 2018 |
| Gerry Towe & Sons Limited | Manufacturing | 2007 |
| Glazed Blinds Ltd | Manufacturing | 2024 |
| Glenavon Football and Athletic Club Limited | Arts & recreation | 1913 |
| Gltec Ltd | Administrative & support | 2022 |
| Goldcrest Property Investments Ltd | Real estate | 2025 |
| Good Forward Limited | Real estate | 2021 |
| Greene Fayre Ltd | Wholesale & retail | 2012 |
| Hannon Coach Hire Ltd | Transport & logistics | 2016 |
| Hannon Fleet Sales Ltd | Wholesale & retail | 2016 |
| Hannon Holdings Limited | Professional & scientific | 2020 |
| Hannon Holdings Property Limited | Real estate | 2020 |
| Hannon Pharmalink (UK) Ltd | Transport & logistics | 2025 |
| Hannon Transport Limited | Transport & logistics | 2001 |
| Henderson's North ST Limited | Wholesale & retail | 2012 |
| Henry Mccorry Ltd | Manufacturing | 2003 |
| Hewitt Bros. (Lurgan) Ltd. | | 1990 |
| Hmwb Ltd | Real estate | 2015 |
| Hollows Lurgan Management Limited - the | Real estate | 2004 |
| HOY Contracting Services Ltd | Information & communication | 2013 |
| Huhtamaki (Lisburn) Limited | Manufacturing | 1965 |
| Imu-Agro Ltd | Manufacturing | 2013 |
| Integraspec GB Limited | Manufacturing | 2005 |
| Integraspec Trading Limited | Manufacturing | 2010 |
| Investment Boom Ltd | Real estate | 2017 |
| J & M Enterprises Ltd | Construction | 2012 |
| James Hamilton & Company (Lurgan) Limited | Manufacturing | 1964 |
| James Hamilton Bearings Limited | Wholesale & retail | 2024 |
| Jetcut Services (N.I.) Ltd | Manufacturing | 2022 |
| JK Autospares(Lurgan) Limited | Wholesale & retail | 2012 |
| JLN Property Holdings Ltd | Financial services | 2021 |
| JM Scaffolding (N.I.) Ltd. | Construction | 2017 |
| JMC Industries Ltd | Manufacturing | 2021 |
| John Gorman Contracts Ltd | Construction | 2019 |
| John Mccormick (Importers & Distributors) Ltd | Wholesale & retail | 2004 |
| Joka Ltd | Wholesale & retail | 2023 |
| Jordan Cruz Contracts Ltd | Construction | 2024 |
| Jshughesholding Ltd | Financial services | 2024 |
| JSJ25 Limited | Construction | 2024 |
| Jtwsg Ltd | Manufacturing | 2024 |
| KD Heating and Plumbing Ltd | Construction | 2022 |
| Kettyle Foods | Manufacturing | 2003 |
| Kilmore Building & Joinery Limited | Construction | 1998 |
| KIT Ireland Limited | Other services | 2010 |
| L.A. Drinks Company Limited | Wholesale & retail | 1995 |
| Lacacleaning Ltd | Administrative & support | 2017 |
| Lagan Gate Management 2 Limited | Households | 2017 |
| LCF Farm Limited | Agriculture & fishing | 2019 |
| Lennon Bros Ltd | Construction | 2025 |
| Leprino Foods Pension Trustees Limited | Extraterritorial | 1993 |
| Lilburn Hall Management Company Limited | Households | 2018 |
| Limitless Golf Ltd | Arts & recreation | 2022 |
| Linden Foods | Manufacturing | 1981 |
| Lisnaree Bespoke Furnishings Ltd | Manufacturing | 2017 |
| Lisnaree Property Ltd | Real estate | 2024 |
| Little Bambino Ltd | Extraterritorial | 2013 |
| Locumlink Solutions Ltd. | Real estate | 2019 |
| Lough Neagh Rescue Limited | Other services | 1996 |
| Lumen Financial Planning Ltd | Financial services | 2008 |
| Lurgan Filling Station Limited | Wholesale & retail | 2008 |
| Lurgan Holdings Limited | Real estate | 2018 |
| Lurgan Kebab Ltd | Hospitality | 2022 |
| Lurgan Nails & Spa Limited | Other services | 2021 |
| Lurgan Physiotherapy Limited | Health & social care | 2012 |
| Lurgan RE 2 Ltd. | Real estate | 2018 |
| M & P Kerr Ltd | Construction | 2021 |
| M Percy & SON Ltd | Construction | 2014 |
| M.R.S. (NI) Ltd | Wholesale & retail | 2012 |
| Make a Melody Ltd. | Health & social care | 2021 |
| Make IT Great Ltd | Manufacturing | 2026 |
| Malibu Sunbeds Ltd | Wholesale & retail | 2018 |
| Mark Beattie Plumbing & Heating Ltd | Construction | 2023 |
| Matthew Lough & Sons (N.I.) Limited | Construction | 2010 |
| Maverick Renegade Productions Limited | Wholesale & retail | 2013 |
| Maytown Properties Limited | Real estate | 2013 |
| MC Paving & Groundworks Ltd | Construction | 2024 |
| Mcbride Seafood Ltd | Agriculture & fishing | 2018 |
| Mccrory Group Limited | Construction | 2014 |
| Mccusker Consulting Ltd | Professional & scientific | 2017 |
| Mcdonald & Lappin Engineering Ltd | Manufacturing | 2012 |
| Mcgaffin Contracts Limited | Construction | 1986 |
| Mcgrath Dental Ltd | Health & social care | 2023 |
| Mcintyre Engineering & Construction Ltd | Construction | 2020 |
| MCK Accounting Services Ltd | Professional & scientific | 2025 |
| Mckeag Properties Ltd | Real estate | 2022 |
| Mcmillen Driver Training Ltd | Education | 2017 |
| Mcnally Developments Limited | Real estate | 2026 |
| Meadowvale (Newtownhamilton) Management Company Limited | Households | 2018 |
| MJ Global Traders UK Ltd | Wholesale & retail | 2026 |
| MJC GAS Services Limited | Construction | 2024 |
| MM Freight Ltd | Transport & logistics | 2012 |
| Moira Properties Limited | Construction | 2007 |
| Molloy Engineering Limited | Manufacturing | 2005 |
| Morgan Anderson Management Limited | Real estate | 2003 |
| Mossvale Properties Ltd | Real estate | 2025 |
| Motorpulse Pro IOT Solutions Ltd | Professional & scientific | 2026 |