| Bailey Manor Management Company Limited | Real estate | 2007 |
| Bailey NI Trading Ltd | Wholesale & retail | 2021 |
| Bailie Orthopedics Limited | Health & social care | 2020 |
| Bailies Coffee Co. Ltd | Manufacturing | 2005 |
| Bailies LLP | | 2015 |
| Bailies Roasterie LLP | | 2007 |
| Baird Holdings Limited | Financial services | 2024 |
| Baize Limited | Wholesale & retail | 2025 |
| Bajwa Fast Foods Ltd | Hospitality | 2023 |
| Baker & Mckenzie Global Services NI Limited | Professional & scientific | 2014 |
| Baker Street Kitchen Ltd | Hospitality | 2019 |
| Baker Tilly Mooney Moore Limited | Professional & scientific | 2022 |
| Bakerandchef Limited | Hospitality | 2023 |
| Bakersfield Enterprises Limited | Wholesale & retail | 2007 |
| Bakhtawar Daud Ltd | Wholesale & retail | 2024 |
| Balady Bread Limited | Manufacturing | 2023 |
| Balaji Retail Group Limited | Wholesale & retail | 2022 |
| Balance Investments Ltd | Real estate | 2026 |
| Balance Leisure Fitness Ltd | Arts & recreation | 2014 |
| Baldota LAI Property Group Limited | Financial services | 2020 |
| Baldrick & Company Ltd | Construction | 2022 |
| Baleen Limited | Wholesale & retail | 2025 |
| Baleney Renewables Limited | Energy | 2012 |
| Balfour Kilpatrick Northern Ireland Limited | Construction | 1968 |
| Ball Software Limited | Information & communication | 2019 |
| Balladon Ltd | Professional & scientific | 2015 |
| Ballaghmore Investments Ltd | Real estate | 2018 |
| Ballee NO. 1 Limited | Real estate | 2020 |
| Ballee NO. 2 Limited | Real estate | 2020 |
| Ballee NO. 3 Limited | Real estate | 2020 |
| Ballee NO. 4 Limited | Real estate | 2020 |
| Ballinderry Tyres Ltd | Wholesale & retail | 2023 |
| Ballingaddy Properties Ltd | Professional & scientific | 2005 |
| Balloo Investments (N.I.) Ltd | Financial services | 2019 |
| Ballr Club Limited | Wholesale & retail | 2025 |
| Ballure Co Ltd | Construction | 2012 |
| Ballure Wind Co Ltd | Construction | 2012 |
| Ballyballoo Limited | Financial services | 2018 |
| Ballybay Trading Limited | Hospitality | 2024 |
| Ballybeen Improvement Group | Administrative & support | 2012 |
| Ballybeg Limited | Agriculture & fishing | 2015 |
| Ballybentragh Developments Ltd | Construction | 2018 |
| Ballyblack Trading Limited | Real estate | 2011 |
| Ballybot Close Management Co Ltd | Households | 2021 |
| Ballybracken Farms Limited | Agriculture & fishing | 2013 |
| Ballycastle Community Hub Ltd | Agriculture & fishing | 2023 |
| Ballyclare Autos Ltd | Wholesale & retail | 2020 |
| Ballyclare Healthcare Limited | Health & social care | 2018 |
| Ballyclare Retail Ltd | Wholesale & retail | 2018 |
| Ballycoan Developments Limited | Real estate | 2011 |
| Ballycoan Ltd | Extraterritorial | 2024 |
| Ballycoan Properties Limited | Real estate | 2003 |
| Ballycorr Estate Management Company Limited | Households | 2024 |
| Ballycraigy Management Limited | Extraterritorial | 2003 |
| Ballycran Properties Limited | Real estate | 2023 |
| Ballycullo Ltd | Real estate | 2021 |
| Ballydownfine Developments Ltd | Construction | 2016 |
| Ballydownfine Services Limited | Administrative & support | 2021 |
| Ballydrain Limited | Transport & logistics | 2017 |
| Ballydugan Wind Limited | Energy | 2016 |
| Ballyearl Food & Deli Limited | Hospitality | 2019 |
| Ballyeaston Property Ltd | Construction | 2014 |
| Ballygarvan Property Limited | Real estate | 2026 |
| Ballygibson Holdings | Real estate | 2026 |
| Ballygibson Investments Limited | Real estate | 2018 |
| Ballygilbert Trading Limited | Real estate | 2011 |
| Ballygordon Ltd | Administrative & support | 2024 |
| Ballygowan Ltd | Real estate | 2008 |
| Ballygowan Management Company Limited | Households | 2001 |
| Ballyhackamore Holdings Limited | Real estate | 2018 |
| Ballyhampton Limited | Real estate | 2007 |
| Ballyhampton Mews Management Company Limited | Households | 2022 |
| Ballyholme Court Limited | Households | 1997 |
| Ballyholme Management Limited | Households | 2001 |
| Ballyholme Property Management Limited | Households | 2000 |
| Ballyholme Road Management Company (2019) Limited | Households | 2019 |
| Ballyhoy Developments Limited | Real estate | 2002 |
| Ballyhoy Ground Rents Limited | Real estate | 2018 |
| Ballykeel BEG Holding Company Limited | Financial services | 2019 |
| Ballykeel BEG NO. 1 Limited | Real estate | 2019 |
| Ballykeel BEG NO. 2 Limited | Hospitality | 2019 |
| Ballykeel Trading Limited | Real estate | 2018 |
| Ballykeel Wind Farm Limited | Energy | 2013 |
| Ballykema Private Ltd | Real estate | 2024 |
| Ballykine Structural Engineers Limited | Manufacturing | 1997 |
| Ballylagan Limited | Professional & scientific | 2019 |
| Ballylear Company Ltd | Construction | 2019 |
| Ballylesson Limited | Real estate | 2017 |
| Ballylig Flooring Ltd | Construction | 2025 |
| Ballyliss 1 Limited | Construction | 1993 |
| Ballyliss 2 Limited | Construction | 2004 |
| Ballyloran Trailer Repairs Limited | Real estate | 1987 |
| Ballyloughan Developments Limited | Administrative & support | 1974 |
| Ballyloughan Limited | Professional & scientific | 2017 |
| Ballymacarn Limited | Real estate | 2024 |
| Ballymaconaghy Management Company Limited | Households | 2019 |
| Ballymaconnell Management Company Ltd | Households | 2009 |
| Ballymar GAS Limited | Wholesale & retail | 2016 |
| Ballymartin Limited | Extraterritorial | 2018 |
| Ballymena Bioenergy Limited | Energy | 2015 |