| Korythio | |
| Name Local: | Κορύθιο |
| Type: | municipal unit |
| Periph: | Peloponnese |
| Periphunit: | Arcadia |
| Pop Municunit: | 1583 |
| Population As Of: | 2021 |
| Area Municunit: | 115.2 |
| Coordinates: | 37.5°N 50°W |
| Licence: | TP |
Korythio (el|Κορύθιο) 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.[1] The municipal unit has an area of 115.182 km2.[2] Population 1,583 (2021). The seat of the municipality was in Steno. Other villages in the municipal unit are Agiorgitika, Elaiochori, Neochori, Partheni, and Zevgolateio.