| B |
| Ballysillan Leisure CentreBetter | Ballysillan, no street on record | | | |
| Better ConnswaterBetter | Connswater Retail Park, Ballymacarret | | | |
| Better Gym BelfastBetter | Cathedral Quarter, no street on record | | | |
| Body Conscious Studio | 71 Botanic Avenue, Queen's Quarter | bodyconscious.me | +44 7734 027565 | |
| Bodyscapenot edited since 2022 | Upper Malone, no street on record | bodyscapebelfast.com | | |
| C |
| Compound Fitness | Lowwood, no street on record | | | |
| CrossFit KVLR | Markets, no street on record | | | |
| E |
| ECA Belfast Gym | Library Quarter, no street on record | | | |
| F |
| Falls Road Leisure CentreBetter | Lower Falls, no street on record | | | |
| G |
| Grove Wellbeing CentreBetter | Skegoniell, no street on record | | | |
| H |
| Hench | Markets, no street on record | | | |
| Hugh Smyth Centrenot edited since 2017 | Shankill, no street on record | | | |
| I |
| Infinity Studio | Finaghy, no street on record | | | |
| J |
| JD Gyms | Ardoyne, no street on record | | | |
| L |
| Lisnasharragh Leisure Centre | Montgomery Road, Belfast, BT6 9HS, Castlereagh | better.org.uk | +44 28 9693 0040 | |
| Loughside Recreation CentreBetter | Lowwood, no street on record | | | |
| M |
| Magee Health and Fitness | Upper Falls, no street on record | mageehealthandfitness.com | +44 2890 613333 | |
| Maitri Studionot edited since 2017 | 4 The Mount, Woodstock | | | |
| P |
| PureGym | Cathedral Quarter, no street on record | puregym.com | | |
| PureGym | Windsor, no street on record | puregym.com | | |
| PureGym | Linen Quarter, no street on record | puregym.com | | |
| R |
| ReformRX | Windsor, no street on record | | | |
| S |
| Struggle 2 Strength Health & Wellbeing | Whitewell, no street on record | | | |
| Studio Se7en Pilates | Windsor, no street on record | se7enpilates.co.uk | | |
| T |
| T-Fit | Boucher Road, Andersonstown | | | |
| The Pilates Studio | Finaghy, no street on record | | | |
| Thrv Liftstyle | 6 Falcon Road, Windsor | thrvlifestyle.com | | |
| W |
| Whiterock Leisure Centre | Turf Lodge, no street on record | | | |