Trinidad i Tobago je podijeljen na 11 regija, 3 četvrti i 2 grada.
| Regija | Površina (km²) | Stanovnika | Glavni grad |
|---|---|---|---|
| Couva-Tabaquite-Talparo | 719,64 | 162.779 | Couva |
| Diego Martin | 127,53 | 105.720 | Petit Valley |
| Mayaro-Rio Claro | 852,81 | 33.480 | Rio Claro |
| Penal-Debe | 246,91 | 83.609 | Penal |
| Princes Town | 621,35 | 102.375 | Princes Town |
| San Juan-Laventille | 220,39 | 157.295 | San Juan |
| Sangre Grande | 898,94 | 64.343 | Sangre Grande |
| Siparia | 510,48 | 81.917 | Siparia |
| Eastern Tobago | 215,00 | 12.948 | Roxborough |
| Western Tobago | 88,00 | 41.136 | Scarborough |
| Tunapuna-Piarco | 527,23 | 203.975 | Tunapuna |
| Četvrti | |||
| Arima | 11,15 | 32.278 | Arima |
| Chaguanas | 59,65 | 67.433 | Chaguanas |
| Point Fortin | 23,88 | 19.056 | Point Fortin |
| Gradovi | |||
| Port of Spain | 13,45 | 49.031 | Port of Spain |
| San Fernando | 18,64 | 55.419 | San Fernando |
| ukupno | 5.155,05 | 1.262.366 | Port of Spain |