Nea Efesos (Greek: Νέα Έφεσος) is a rural settlement of the former Municipality of Dio, which is part of the municipality of Dio-Olympos, in the Pieria regional unit, Central Macedonia, Greece.

Nea Efesos has 1,328 inhabitants as of 2021.

[1] In 2007 a weather station was installed in the area.

The settlement was recently renamed Νέα Έφεσος (New Ephesus), because of the settlement of Greeks from the region of ancient Ephesus as a result of the 1923 Greek-Turkish population exchange.