Krupa na Vrbasu Monastery, Serbian Orthodox monastery in Krupa na Vrbasu, Bosnia and Herzegovina.

The monastery consists of a building complex centered on the Church of St. Elijah, constructed from rough stone with Gothic-style windows punctuating its outer walls. The church anchors a larger compound that combines religious and architectural elements from different periods into one functioning whole.

The monastery was built at the end of the 13th or beginning of the 14th century on the foundations of an older Roman Catholic monastery. A Gothic altar space with tombs built according to Catholic custom was found east of the church, and buildings around a square courtyard were uncovered to the north. It was abandoned after the fall of the Jajce Banate to the Ottomans in 1528, and the church was restored in 1889.

The church is popularly called Ilinka, after St. Elijah. It belongs to the Eparchy of Banja Luka, and its abbot is Sava Nedeljković. The monastery was restored in 1889 largely through the efforts of Sarajevo Metropolitan Sava Kosanović, with contributions from surrounding villages, parish churches and Gomionica Monastery.

The monastery sits about 20 kilometers upriver from Banja Luka and opens to visitors interested in religious and historical sites. The grounds have regular visiting hours, allowing you to walk the property and see the buildings and cemetery at a comfortable pace.

Archaeological digs beside the church found fragments of painted plaster older than 1527–1528, decorated in blue, ochre and red with an incised geometric ornament. Above the church, on the rock, stand the remains of the medieval fortress of Greben, the town the monastery once served.