Nea Penteli (Greek: Νέα Πεντέλη) is a suburb in the northeastern part of the Athens agglomeration, Greece. Since the 2011 local government reform it is part of the municipality Penteli, of which it is a municipal unit.
Nea Penteli is situated at the southwestern foot of the Penteli mountains, at 410 m elevation. It is 14 km northeast of Athens city centre. At the center of the town is a small hill named Profitis Ilias, after the small church constructed on top of it. Nea Penteli has one primary school and a high school.