| Shaam nights restaurant | Syrian restaurant | 116 City Rd | Mon–Thu 12:00–22:00 |
| Shree Swaminarayan Temple Cardiff | Hindu temple | 4 Merches Pl | Mon–Fri 06:30–09:00, 16:00–19:00 |
| Sonder Bar & Bistro | Bistro | 72 Llandaff Rd | Mon–Fri 12:00–23:00 |
| Spice Village Indian Restaurant and Takeaway | Bangladeshi restaurant | 24 City Rd | Mon–Fri 17:00–23:00 |
| Spray Precision Cardiff | Kitchen Cabinet & UPVC Spraying Specialists | Painting | Sunny Glen | Daily 07:00–20:00 |
| St David's Hospital | General hospital | St Davids Hospital, Cowbridge Rd E | Daily 09:00–17:00 |
| St Peter's Church | Catholic church | 12B St Peter's St | Mon–Fri 09:15–11:15 |
| Stradivarius | Ladies' clothes shop | 7 Bridge St | Mon–Fri 09:30–20:00 |
| Sunhouse | Holistic medicine practitioner | 8 Georgetown | Mon–Fri 09:00–20:00 |
| Taco Bell | Mexican restaurant | Dragon Retail Park, 511 Newport Rd | Mon–Fri 10:00–02:00 |
| Taha Gold Shisha | Hookah shop | 133 City Rd | Daily 11:00–22:00 |
| The Brook Bistro | Modern British restaurant | 76a Merthyr Rd | Tue–Sat 09:00–23:00 |
| The Crispy Catch | Fish and chips takeaway | 75 Caerphilly Rd | Mon–Thu 16:00–23:00 |
| The Dough Thrower - Cathays | Pizza takeaway | 96 Whitchurch Rd | Wed 17:00–21:00 |
| The Everest Bar & Eatery | Nepalese restaurant | 8 The Friary | Tue–Sun 11:00–00:00 |
| The Golden Cross | Gay bar | The Golden Cross, 283 Hayes Bridge Rd | Mon–Thu 12:00–00:00 |
| The Khyber Cuisine | Pakistani restaurant | 21 Corporation Rd | Daily 12:00–23:00 |
| The Open Boat 'Daffodil' | Tourist attraction | Bay, The Waterfront | Mon–Tue 10:30–15:00 |
| The Pen & Paper Stationery Co | Tienda de bolígrafos | 13-17 Royal Arcade | Mon–Sat 09:00–19:00 |
| The Storyteller UK | Wedding photographer | 76 Ashburton Ave | Mon–Fri 09:00–19:30 |
| The Sultan | Turkish restaurant | The Big Windsor, Stuart Pl | Daily 12:00–23:00 |
| The Wedding Filmmaker - Wedding Video in Cardiff | Video production service | 4 Chestnut Rd | Daily Open 24 hours |
| The Wellness Lounge™ – Cardiff | Spa | Willcox House, Dunleavy Dr | Mon–Wed 08:00–21:00 |
| The Wick Sanctuary | Candle shop | Indoor flea market | Wed 09:00–17:00 |
| Thomas Sabo | Jeweller | 5 The Hayes | Mon–Wed 09:30–18:00 |
| Thomas, the brasserie | Brasserie | 3 & 5 Pontcanna St | Wed–Thu 12:00–23:00 |
| Thornhill Cemetery and Cardiff Crematorium | Cemetery | Thornhill Rd | Mon–Fri 09:00–16:45 |
| Tiger Yard | Food court | Tiger Yard, Plot A Porth Teigr Way | Fri 16:00–22:00 |
| Tread Of Heaven mobile tyres | Tire service | Moorland Rd | Daily Open 24 hours |
| Tree Squadron - Cardiff Tree Surgeon | Tree service | Dutch Garden Centre, Maes-Y-Bryn Road | Daily 08:00–19:00 |