| Preko | |
| Official Name: | Općina Preko Municipality of Preko |
| Settlement Type: | Municipality |
| Pushpin Map: | Croatia |
| Coordinates: | 44.0864°N 15.1828°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | County |
| Subdivision Name1: | Zadar County |
| Leader Title: | Municipal mayor |
| Leader Name: | Jure Brižić (HDZ) |
| Area Footnotes: | [1] |
| Area Total Km2: | 54.6 |
| Area Urban Km2: | 5.7 |
| Population As Of: | 2021 |
| Population Total: | 3556 |
| Population Density Km2: | auto |
| Population Urban: | 1250 |
| Population Density Urban Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 23273 Preko |
| Area Code Type: | Area code |
| Registration Plate: | ZD |
Preko (lit. "Across") is a village and a municipality in Zadar County, Croatia. It is situated, as the name suggests, opposite of Zadar, on the island of Ugljan. Its old centre consists of typical Dalmatian architecture with numerous patrician family summer houses. According to the 2011 census, there are 3,805 inhabitants, 88% which are Croats.
Sitting in the mountains above Preko, is the castle of St. Michael, built by Eastern Roman empire in the 6th century. The castle was rebuilt by the Republic of Venice in the 13th century. Its main purpose was control above channel of Zadar and group of islands behind the island of Ugljan.The castle was sacked by English crusaders on their way to the Holy Land, and by the Nazis in World War II. The high position of the castle made it the perfect lookout and listening station for the occupying Germans. Today, the castle is home to a telecommunications station. About 80 m from Preko lies the islet of Galevac (Školjić).
The 11th century Romanesque church of St. John the Baptist is situated on the eastern side of the locality, near the ferry port. Preko is the closest starting point for the excursion to St. Michael's fortress (265 m above the sea level). The view from the fortress spreads over more than 200 islands of the archipelago of Zadar and Kornati National Park.