| Jurisdiction: | Diocese |
| Feldkirch | |
| Latin: | Dioecesis Campitemplensis |
| Local: | Diözese Feldkirch |
| Country: | Austria |
| Metropolitan: | Archdiocese of Salzburg |
| Territory: | Vorarlberg |
| Province: | Salzburg |
| Area Km2: | 2,601 |
| Population: | 395,012 |
| Population As Of: | 2019 |
| Catholics: | 233,081 |
| Catholics Percent: | 59 |
| Denomination: | Roman Catholic |
| Rite: | Roman Rite |
| Established: | 8 December 1968 |
| Cathedral: | St. Nicholas Cathedral, Feldkirch |
| Patron: | Saint Nicholas |
| Bishop: | Benno Elbs |
| Metro Archbishop: | Franz Lackner |
| Map: | Bistuemer oesterreich feldkirch.png |
| Website: | Website of the Diocese |
The Diocese of Feldkirch (Latin: Dioecesis Campitemplensis) is a Latin Church diocese located in the city of Feldkirch, Vorarlberg, in the ecclesiastical province of Salzburg in Austria.