Grožnjan, Croatia

Grožnjan (Italian: Grisignana) is a settlement and municipality in Croatia. It is part of Croatia's Istria County, which takes up most of the Istrian peninsula. 39% of the municipality's population has Italian ethnicity.

In Grožnjan are found ancient Roman artifacts and near Grožnjan is the remains of a Roman house, but the first mention of Grožnjan dates from 1102, when Margrave of Istria Ulric II and his wife Adelaida granted their land to Patriarch of Aquileia. In this document the fort is called Castrum Grisiniana. In 1238 Grožnjan was the property of Vicardo I Pietrapalosa. In 1286, Grožnjan fort was lent to the Aquileian patriarch during war with Venice but changed sides in 1287 and Grožnjan was given to Venice.