| 361 | Swedish Elkhound | Group 5 Primitive type dogs and Spitzes |
| 362 | Swedish Lapphund | Group 5 Primitive type dogs and Spitzes |
| 363 | Swedish Vallhund | Group 5 Primitive type dogs and Spitzes |
| 364 | Swiss Hound | Group 6 Scent hounds and related breeds |
| 365 | Taigan | Not categorized by FCI |
| 366 | Taiwan Dog | Group 5 Primitive type dogs and Spitzes |
| 367 | Tamaskan Dog | Not categorized by FCI |
| 368 | Tatra Shepherd Dog | Group 1 Sheepdogs and Cattledogs |
| 369 | Tesem | Not categorized by FCI |
| 370 | Thai Ridgeback Dog | Group 5 Primitive type dogs and Spitzes |
| 371 | Tibetan Mastiff | Group 2 Pinschers, Schnauzers, Mastiffs and Swiss mountain & cattledogs |
| 372 | Tibetan Spaniel | Group 9 Companions and Toys |
| 373 | Tibetan Terrier | Group 9 Companions and Toys |
| 374 | Tosa Inu, Tosa | Group 2 Pinschers, Schnauzers, Mastiffs and Swiss mountain & cattledogs |
| 375 | Toy Manchester Terrier | Group 3 Terriers |
| 376 | Transylvanian Hound | Group 6 Scent hounds and related breeds |
| 377 | Treeing Walker Coonhound | Group 10 Sighthounds (Windhounds) |
| 378 | Tyrolean Hound | Group 6 Scent hounds and related breeds |
| 379 | Italian Volpino | Group 5 Primitive type dogs and Spitzes |
| 380 | Waeller | Not categorized by FCI |