| Code | Name | Region |
|---|---|---|
| JPTNC | Toin, Mie | 24 |
| JPTJM | Tojima | 38 |
| JPTOK | Tokachi | 1 |
| JPTKA | Tokai | 23 |
| JPTKB | Tokamachi | 15 |
| JPTJS | Tokashiki | 47 |
| JPGHU | Toki Gifu | 21 |
| JPHKG | Tokigawa | 11 |
| JPTTU | Tokitsu | 42 |
| JPTTY | Tateyama | 12 |
| JPTTC | Tateyama | 16 |
| JPTAT | Tatsugo | 46 |
| JPTTN | Tatsuno | 28 |
| JPTAU | Taura | 35 |
| JPTYU | Tayui | 42 |
| JPTEI | Tei | 39 |
| JPTIS | Teishi | 22 |
| JPTEK | Tekutsuku | 46 |
| JPTEN | Tendo | 6 |
| JPTRI | Tenri | 29 |
| JPTRD | Teradomari | 15 |
| JPTZU | Terazu/matsue | 32 |
| JPTRZ | Terazu/yatsuka | 32 |
| JPTSI | Teshima | 37 |
| JPTSO | Teshio | 1 |
| JPTEU | Teuchi | 46 |
| JPTER | Teuri | 1 |
| JPTOB | Toba | 24 |
| JPTBT | Tobata/kitakyushu | 40 |
| JPTAE | Tanabe | 30 |
| JPTAN | Tanagawa | 27 |
| JPTNZ | Tanagura, Fukushima | 7 |
| JPTNK | Tanasoko | 43 |
| JPTNE | Tanegashima | 46 |
| JPTNY | Taniyama | 46 |
| JPTAW | Tannowa | 27 |
| JPTHM | Tanohama | 3 |
| JPTUR | Tanoura, Ehime | 38 |
| JPTNR | Tanoura, Kumamoto | 43 |
| JPTNU | Tanoura/kitakyushu | 40 |
| JPTNW | Tanowaki | 46 |
| JPTRA | Taramajima | 47 |
| JPTRH | Tarugahama | 42 |
| JPTMZ | Tarumizu | 46 |
| JPTSS | Tasumi | 32 |
| JPTTB | Tatebayashi | 10 |
| JPTAY | Tatebayashi | 10 |
| JPTET | Tateishi, Ehime | 38 |
| JPTTS | Tateishi, Kagawa | 37 |
| JPTHR | Takehara | 34 |