The Krk Cathedral or fully Cathedral of the Assumption of the Blessed Virgin Mary is a cathedral in the town of Krk on the northern Adriatic island of Krk, Croatia. It is the seat of the Roman Catholic Diocese of Krk. The church was built in the 5th or 6th century but archeological evidence suggests that the site was used by Christians as early as 4th century.
The cathedral is located beneath the Krk town hill. The first documented mention of the church dates from 1186. It is a three-nave early Christian basilica which is part of a larger complex, along with the Romanesque Church of Saint Quirinus, a bell tower, the Chapel of Saint Barbara, an early Christian baptistry and an apse. As common with other churches from the same period, it is oriented east/west, with its façade facing a street which goes through the town of Krk in the north/south direction. The church is 40 meters long and interior width is 14.5 m.
Coordinates 45°1'32.97" N 14°34'33.038" E