Oreino (Greek: Ορεινό) is a former municipality in the Kavala regional unit, East Macedonia and Thrace, Greece.

Since the 2011 local government reform it is part of the municipality Nestos, of which it is a municipal unit.

[2] The municipal unit has an area of 318.555 km2.

The seat of the municipality was in Lekani.

This Eastern Macedonia and Thrace location article is a stub.