Korissia (Greek: Κορισσία) is a former municipality on the island of Corfu, Ionian Islands, Greece. Since the 2019 local government reform it is part of the municipality South Corfu, of which it is a municipal unit. It is in the southern part of the island. It has a land area of 27.675 km. The seat of the municipality was the town of Argyrades.

Subdivisions

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

• Argyrades (Argyrades, Agios Georgios, Marathias, Neochoraki)
• Agios Nikolaos (Agios Nikolaos, Notos, Roumanades)
• Kouspades (Kouspades, Boukari)
• Perivoli (Perivoli, Potamia)
• Petriti (Petriti, Korakades)
• Vasilatika

Population

Year	Population
1991	5,010
2001	5,206
2011	4,775
2021	4,364