Lerna (municipal unit)
Lerna is a former municipality in Argolis, Peloponnese, Greece. Since the 2011 local government reform, it has been part of the municipality Argos-Mykines, of which it is a municipal unit. The municipal unit has an area of 84.285 km2. The seat of the municipality was Myloi.
Historical population
| Year | Population |
| 1991 | 2,742 |
| 2001 | 3,042 |
| 2011 | 2,319 |
| 2021 | 2,747 |