Nin (Latin: Aenona or Nona) is a town in the Zadar county of Croatia, population 1,256 (2001), total municipality population 4,603 (2001). Nin was historically important as a centre of a Christian Bishopric in the Middle Ages. Up to the abolition and Latinization imposed by King Tomislav in the first half of the 10th century, Nin was the centre of the autonomous Croatian branch of the Church.
Nin was also the seat of the Princes of Dalmatia. The Bishop Gregory of Nin (Grgur ninski) was an important figure in the 10th century Church politics of Dalmatia. A small town near Zadar, Nin has a very rich and tumultuous history. Its location is intriguing; the heart of Nin is its historical center on an islet only 500 meters in diameter.
Nin is situated in a lagoon on the eastern shore of the Adriatic Sea, surrounded by natural sandy beaches and linked with the mainland by two stone bridges from the 16th century. According to historians the area of Nin appears to have been settled 10000 years ago. The present-day town on the islet developed 3000 years ago and is one of the older towns on the eastern Adriatic. The area of Nin was colonized by immemorial people of the Mediterranean.