| Piana degli Albanesi Cathedral | |
| Fullname: | Cathedral of Saint Demetrius the Great Martyr |
| Other Name: | Cattedrale di Piana degli Albanesi |
| Native Name: | Kryeklisha e Shën Mitrit të Madhit Dëshmor |
| Native Name Lang: | Arbëreshë |
| Coordinates: | 37.9964°N 13.2838°W |
| Country: | Italy |
| Location: | Piana degli Albanesi |
| Denomination: | Italo-Albanian Catholic Church |
| Tradition: | Byzantine Rite |
| Consecrated Date: | 1589 |
| Years Built: | 1491 |
| Completed Date: | 1644 |
| Province: | Palermo |
Piana degli Albanesi Cathedral, in full the Cathedral of Saint Demetrius the Great Martyr[1] (Kryeklisha e Shën Mitrit të Madhit Dëshmor, or Klisha e Madhe (The Grand Church); Italian: Cattedrale di Piana degli Albanesi, Cattedrale di San Demetrio Megalomartire) is a cathedral in Piana degli Albanesi, Palermo, Italy. It is the seat of the Eparchy of Piana degli Albanesi, part of the Byzantine Rite Italo-Albanian Catholic Church.