Eleios-Pronnoi (Greek: Ελειός-Πρόννοι) is a former municipality on the island of Kefalonia, Ionian Islands, Greece.

Since the 2019 local government reform it is part of the municipality Argostoli, of which it is a municipal unit.

[2] The municipal unit has an area of 111.687 km2.

The municipal unit contains several mountain ranges, including the eastern part of Mount Ainos.

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