Church of St. Petra at Prika is an old Croatian church in Omiš from the 9th or 10th century. It is located on the right bank of the river Cetina, mentioned for the first time in 1074 during the reign of King Slavac. It was erected on the site of an early Christian sacral building, and during the time of the Poljička Republika it became very important when in 1750 a Glagolitic seminary was founded there.