Gortyna (Greek: Γόρτυνα), is a former municipality in Arcadia, Peloponnese, Greece.

The municipal unit Gortyna is subdivided into the following communities (constituent villages in brackets): The ancient city Gortys was located in the valley of the river Lousios.

It reputedly was founded by Gortys, son of Stymphalus, a legendary king of Arcadia.

[5] The territory of the municipal unit Gortyna is very mountainous: the Mainalo lies to the northeast, and the Lykaion to the southwest.

The rivers Lousios and Alfeios flow through it and have created deep gorges.