| Official Name: | Komarna |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Label Position: | left |
| Coordinates: | 42.9453°N 17.5336°W |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Name1: | Dubrovnik-Neretva County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Slivno |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.7 |
| Population As Of: | 2021 |
| Population Total: | 412 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Komarna is a village in southern Dalmatia, Croatia, in the municipality of Slivno. It is the largest village in the municipality and located near the village of Klek.
The village is south of the Neretva Delta, 70 km north of Dubrovnik on the coast of Mali Ston Bay, overlooking the Pelješac peninsula, near the Pelješac Bridge.
According to the 2021 census, its population was 412. It was 167 in 2011.