| Official Name: | Plina Jezero |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Label Position: | left |
| Coordinates: | 43.1011°N 17.475°W |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Name1: | Dubrovnik-Neretva County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Ploče |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 24.5 |
| Population As Of: | 2021 |
| Population Total: | 32 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Plina Jezero is a village in Dubrovnik-Neretva County in Croatia.
According to the 2021 census, its population was 32. It was 44 in 2011.