| 20/20 Professional Services Ltd | Professional & scientific | 2012 |
| 3 Pier West Ltd | Real estate | 2023 |
| 3HILLSIDE Ltd | Households | 2022 |
| A & G Fast Foods Ltd | Hospitality | 2025 |
| A Kane Contracts Ltd | Construction | 2022 |
| A Secret Group Limited | Other services | 2025 |
| A&D Brown Services Limited | Construction | 2017 |
| Aborthwick Ltd | Information & communication | 2025 |
| Ace Scaffolding Ballymoney Limited | Construction | 2017 |
| ADK Support Services Limited | Administrative & support | 2018 |
| Affinity News Limited | Extraterritorial | 2012 |
| Agri Build N.I. Limited | Construction | 2025 |
| Agri Design Ltd | Professional & scientific | 2018 |
| AJP 23 Ltd | Real estate | 2023 |
| Ajrm Holdings Limited | Financial services | 2021 |
| AK Automotive Sales (N.I.) Limited | Wholesale & retail | 2024 |
| Aldyth Construction Limited | Construction | 2021 |
| Alil Europe Limited | Construction | 2020 |
| Allen Energy Limited | Energy | 2016 |
| ALT Trade Counter Ltd | Wholesale & retail | 2013 |
| Altarichard Concrete Solutions Ltd | Manufacturing | 2015 |
| Amce Surveying Services Ltd | Professional & scientific | 2022 |
| AMG Financial Planning Ltd | Other services | 2009 |
| AMG Property Holdings (NI) Ltd | Real estate | 2017 |
| AMG Property Maintenance (N.I.) Ltd | Construction | 2016 |
| AMG Property Rental Services (NI) Ltd | Real estate | 2020 |
| AMG Property Sales Ltd | Real estate | 2016 |
| AMP Creative Studios CIC | Arts & recreation | 2023 |
| Angle Nation Ltd | Professional & scientific | 2014 |
| Anommymousse Games Limited | Information & communication | 2021 |
| AP Developments (NI) Limited | Real estate | 2014 |
| AR Property Worx (NI) Ltd | Real estate | 2025 |
| Ardreagh Ltd | Wholesale & retail | 2020 |
| ARK Training and Consultancy (NI) Ltd | Health & social care | 2023 |
| Armoy Cross Community Playgroup | Education | 2024 |
| Armoy Filling Station Ltd | Wholesale & retail | 2024 |
| Armoy Motorcycle Road Racing Club | Arts & recreation | 2008 |
| Arte Tiles ETC Ltd | Wholesale & retail | 2013 |
| Arty Pictures Ltd | Information & communication | 2019 |
| Ashbrook Cottage Limited | Manufacturing | 2022 |
| Athlete Focused NI Ltd | Arts & recreation | 2021 |
| Athstac Limited | Information & communication | 2026 |
| Aurora Charters Portrush Ltd | Agriculture & fishing | 2025 |
| Aurorapro Ltd | Wholesale & retail | 2022 |
| B.Bartlett Transport Limited | Transport & logistics | 2025 |
| Bally Money Limited | Professional & scientific | 2015 |
| Ballybee Ltd | Construction | 2022 |
| Ballybogey Community Association | Other services | 2012 |
| Ballybogey Farms Limited | Agriculture & fishing | 2015 |
| Ballybogey Management Company Limited | Extraterritorial | 2004 |
| Ballyboyland Poultry Limited | Agriculture & fishing | 2026 |
| Ballymacaldrick Stables Ltd | Agriculture & fishing | 2025 |
| Ballymoney Bazaar Ltd | Wholesale & retail | 2026 |
| Ballymoney Foodbank Limited | Health & social care | 2014 |
| Ballymoney Nails & Spa Ltd | Other services | 2025 |
| Ballymoney Property Holding Ltd | Real estate | 1976 |
| Ballymoney Regeneration Company Limited | Administrative & support | 1993 |
| Ballymoney Scaffolding Ltd | Construction | 2011 |
| Ballymoney, Finvoy & Rasharkin [BFR] Parish Caring Association | Health & social care | 2014 |
| Ballytaggart Forge Limited | Agriculture & fishing | 2019 |
| Balnamore Properties Ltd | Real estate | 2022 |
| Bann Surveying Services Ltd | Professional & scientific | 2026 |
| Bannworks Limited | Wholesale & retail | 2018 |
| Bapcleaningservicesni Limited | Households | 2024 |
| Bartlett Car Tranpsort Ltd | Transport & logistics | 2017 |
| Bartlett Vans Ltd | Wholesale & retail | 2022 |
| Basalt SIX Limited | Wholesale & retail | 2021 |
| Basil Knipe Electrics Limited | Wholesale & retail | 2008 |
| Bath-A-Licious Limited | Manufacturing | 2024 |
| Behind the AD Ltd | Professional & scientific | 2021 |
| Bell Architects Ltd | Professional & scientific | 2003 |
| Bellingham Plant Ltd | Administrative & support | 2026 |
| Belmont Retail Ltd | Construction | 2017 |
| Bespoke Surfaces NI Ltd | Construction | 2024 |
| Best Artificial Ltd | Wholesale & retail | 2016 |
| Best Beats Limited | Wholesale & retail | 2024 |
| Birch Tree Company NO 6 Limited | Extraterritorial | 2014 |
| Bklk Property Limited | Real estate | 2021 |
| Blackwater Building and Joinery Ltd | Construction | 2021 |
| Blockchain Ireland Ltd | Professional & scientific | 2021 |
| Bold Venture Holdings | Financial services | 2020 |
| Bold Venture Limited | Agriculture & fishing | 2020 |
| Bootown Records Limited | Information & communication | 2023 |
| Boxing N.I Functional Integrated Performance Centre Limited | Arts & recreation | 2020 |
| Boyd & Sons (Bendooragh) Limited | Administrative & support | 1978 |
| Boyland Books Ltd | Information & communication | 2023 |
| Bravallen Design Ltd | Manufacturing | 2022 |
| Brett Logue Independent Music Publishing Limited | Information & communication | 2023 |
| Bridgend Properties Ltd | Hospitality | 2019 |
| Bright Light Consulting Limited | Professional & scientific | 2025 |
| Broadstone Cost & Project Management Ltd | Professional & scientific | 2026 |
| Brookels Ltd | Agriculture & fishing | 2016 |
| Brooklands Convenience Ltd | Wholesale & retail | 2018 |
| Building Communities Resource Centre Ltd | Information & communication | 2008 |
| Burnquarter Limited | Energy | 2013 |
| Burns Technology Services Limited | Information & communication | 2024 |
| Burnside Kingdom Investments Ltd | Financial services | 2023 |
| Burrenview Limited | Extraterritorial | 2009 |
| Bushvale Developments Limited | Professional & scientific | 2007 |
| Buzz Biolabs Ltd. | Professional & scientific | 2023 |