Valtetsi (Greek: Βαλτέτσι) is a former municipality in Arcadia, Peloponnese, Greece.

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

[2] The municipal unit has an area of 210.243 km2.

Valtetsi is located in the highlands southwest of Tripoli and northeast of Megalopoli.

The municipal unit Valtetsi is subdivided into the following communities (constituent villages in brackets):