Nea Penteli () is a small municipal unit - village 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 elevation. The municipal unit has an area of 3.230 km<sup>2</sup>. It is northeast of Athens city centre. At the centre of the village 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.