Ermionida (Greek: Ερμιονίδα) is a municipality in the Argolis regional unit, Peloponnese, Greece.

The seat of the municipality is the town Kranidi.

[3] The municipality Ermionida was formed at the 2011 local government reform by the merger of the following 2 former municipalities, that became municipal units:[2] The province of Ermionida (Greek: Επαρχία Ερμιονίδας) was one of the three provinces of Argolis Prefecture.

Its territory covered the territory of the present Ermionida municipality.

[4] This Peloponnese location article is a stub.