Church of St. Nicholas, Pre-Romanesque church in Nin, Croatia.

The Church of St. Nicholas is a late 11th- or early 12th-century Pre-Romanesque church on an earthen mound in the Prahulje field between Nin and Zaton. It has a trefoil plan: three semicircular apses and a rectangular entrance branch around a circular core, built of small layered stones. It measures 5.90 m long, 5.70 m wide and 6 m high inside, with 50 cm thick walls.

The Church of St. Nicholas was built in the late 11th or early 12th century on an earthen mound above a Liburnian prehistoric tomb in the Prahulje field. In the 16th or 17th century, during the Croatian–Ottoman war, a defensive crown with eight battlements was added as a lookout. In 1603 the visitor Priul found Glagolitic baptism and marriage registers and two Glagolitic missals there.

The church is dedicated to Saint Nicholas, whose feast on 6 December drew Masses for the protection of sailors and travellers. In 1603 the visitor Priul found Glagolitic baptism and marriage registers and two Glagolitic missals here, kept by the Brotherhood of the Holy Spirit, then 28 members strong.

The church stands on an earthen mound in the field of Prahulje between Nin and Zaton, about a mile from Zadar, reached by an uneven path. Mass is held on 25 April for Saint Mark with a blessing of the fields, and on 6 December for Saint Nicholas. The interior measures 5.90 m by 5.70 m with 6 m height, so only a few visitors fit inside at once.

The church stands on an earthen mound raised over a Liburnian prehistoric tomb, so the hill itself predates the building. In 1603 a visitor named Priul found neatly kept Glagolitic registers of baptisms and marriages there, plus two Glagolitic missals, and a Brotherhood of the Holy Spirit with 28 members active in the parish.