Kleitor or Cleitor (Greek: Κλείτωρ) is a former municipality in Arcadia, Peloponnese, Greece.

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

[2] The municipal unit has an area of 150.582 km2.

Cleitor was a historic and powerful city-state in ancient Greece.

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