| Barrington Security Ltd | Tienda de cajas fuertes | Unit 3, Barrington Security Ltd, Carryduff Business Park, Comber Rd | Mon–Thu 08:30–17:00 |
| Bash Technology Services | Computer service | Ground Floor Unit 4, 4 College Ave | Thu 10:00–00:00 |
| Belfast Angling Centre | Fishing shop | Unit 44, Argyle Business Centre, Northumberland St | Mon–Sat 09:00–17:00 |
| Belfast Bounce - Bouncy Castle Hire | Party equipment rental service | 68-72 Newtownards Rd | Mon–Fri 08:00–21:00 |
| Belfast Builders NI | Home builder | 19 Lagmore Dl | Mon–Thu Open 24 hours |
| Belfast Bullion | Gold dealer | Ste 1, 20 Adelaide St | Mon–Fri 10:00–17:45 |
| Belfast Castle Court Argos | Department store | Unit 44 Castle St, Royal Ave | Thu 09:00–18:00 |
| Belfast City Bike Tours | Bicycle hire shop | 18 Winetavern St | Daily 10:00–13:00, 14:00–17:00 |
| Belfast Empire Music Hall | Live music bar | 42 Botanic Ave | Mon 12:00–01:00 |
| Belfast Forestside Argos (Inside Sainsbury's) | Baby shop | Forestside Shopping Centre | Mon–Sat 09:00–21:00 |
| Belfast Guitar Academy | Guitar instructor | 133 Albertbridge Rd | Mon 14:00–19:00 |
| Belfast Montgomery St | Public parking space | Montgomery St | Daily 07:00–22:00 |
| Belfast Opcare Clinics | Clinic | Belfast Opcare Amputee Rehabilitation Centre RDS Building, Musgrave Park Hospital Stockman's Lane | Mon–Thu 08:30–17:00 |
| Belfast Physio & Sports Injuries Clinic | Physiotherapist | 296 Saintfield Rd | Mon–Thu 06:30–21:00 |
| Belfast Roofing Supply Centre | Tienda de suministros para cubiertas y tejados | 19, Carrowreagh Business Park, Carrowreagh Rd | Mon–Thu 08:00–16:30 |
| Belfast Tool Library | Tool shop | Shankill Mission Building, 116 Shankill Rd | Tue 18:00–21:00 |
| BELLezzA by CB | Beautician | Baronsgrange Rd | Mon–Fri 09:00–18:00 |
| Bells & Whistles NI | Marriage celebrant | Castlereagh Rd | Daily Open 24 hours |
| Belmont Furnishings | Flooring shop | Locksley Business Park, 39 Montgomery Rd | Mon–Fri 09:00–17:00 |
| Belmont Playcare | Pre-school | 215 Belmont Rd | Mon–Fri 08:00–18:00 |
| Belvoir Park Pro Shop | Golf shop | 73 Church Rd | Daily 10:00–23:00 |
| Bites of India Botanic | Restaurante indio | 11 Botanic Ave | Mon 10:00–14:30, 17:00–23:00 |
| BlayrePsychotherapy | Counsellor | 27 Andersonstown Rd | Mon–Wed 09:00–19:00 |
| Blue Chicago Grill Dundonald | Diner | East Point Entertainment Village, Old Dundonald Rd | Mon–Sat 12:00–21:00 |
| Blush Boutique | Boutique | 166a Lisburn Rd | Mon–Sat 10:00–17:00 |
| Boojum - Lisburn Road | Mexican restaurant | 509-511 Lisburn Rd | Daily 11:30–22:00 |
| Botanic Gardens | Botanical garden | College Park Ave, Botanic Ave | Daily 07:30–21:00 |
| Box-it (Ireland) Ltd | Packaging supply shop | Unit 11, 40 Montgomery Rd | Mon–Thu 08:00–17:00 |
| Bradbury Dental Centre | Dentista | 46 Bradbury Pl | Mon–Thu 08:30–13:00, 14:00–17:30 |
| Braeside Nursery | Nursery | 25 School Rd | Mon–Sat 09:00–17:30 |