| Official Name: | Mravnica |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Label Position: | left |
| Coordinates: | 42.8344°N 17.8194°W |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Name1: | Dubrovnik-Neretva County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Dubrovačko Primorje |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 8.8 |
| Population As Of: | 2021 |
| Population Total: | 29 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Mravnica is a village in Croatia.
According to the 2021 census, its population was 29.