Plomin (Italian: Fianona) is a village in Kršan municipality in Istria County, Croatia.

[3] , situated approximately 11 km north of Labin, on a hill 80 meters tall.

Plomin was abandoned after World War II, due to the bay becoming too muddy and its inhabitants, mostly Italians, emigrating to Italy.

The buildings in the town are several hundred years old, built on the ruins of the original Roman houses.

St. George the Elder contains Plomin tablet as a part of the outer wall, an 11th-century religious text written in the Glagolitic alphabet, the oldest known Slavic alphabet.