The following is a list of the 33 municipalities (comuni) of the Province of Terni, Umbria, Italy.[1]
| ISTAT Code | Comune | Population (2005) | |
|---|---|---|---|
| 055001 | Acquasparta | 4,843 | |
| 055002 | Allerona | 1,867 | |
| 055003 | Alviano | 1,539 | |
| 055004 | Amelia | 11,599 | |
| 055005 | Arrone | 2,744 | |
| 055006 | Attigliano | 1,759 | |
| 055007 | Baschi | 2,709 | |
| 055008 | Calvi dell'Umbria | 1,860 | |
| 055009 | Castel Giorgio | 2,187 | |
| 055010 | Castel Viscardo | 3,070 | |
| 055011 | Fabro | 2,745 | |
| 055012 | Ferentillo | 1,927 | |
| 055013 | Ficulle | 1,730 | |
| 055014 | Giove | 1,856 | |
| 055015 | Guardea | 1,822 | |
| 055016 | Lugnano in Teverina | 1,610 | |
| 055017 | Montecastrilli | 4,888 | |
| 055018 | Montecchio | 1,749 | |
| 055019 | Montefranco | 1,329 | |
| 055020 | Montegabbione | 1,270 | |
| 055021 | Monteleone d'Orvieto | 1,598 | |
| 055022 | Narni | 20,212 | |
| 055023 | Orvieto | 20,841 | |
| 055024 | Otricoli | 1,867 | |
| 055025 | Parrano | 589 | |
| 055026 | Penna in Teverina | 1,070 | |
| 055027 | Polino | 275 | |
| 055028 | Porano | 1,867 | |
| 055029 | San Gemini | 4,587 | |
| 055030 | San Venanzo | 2,324 | |
| 055031 | Stroncone | 4,698 | |
| 055032 | Terni | 108,999 | |
| 055033 | Avigliano Umbro | 2,488 | |
| Total | 226,518 |