| Official Name: | Buna |
| Settlement Type: | Village |
| Pushpin Map: | Bosnia and Herzegovina |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: | Bosnia and Herzegovina |
| Subdivision Type1: | Entity |
| Subdivision Name1: | Federation of Bosnia and Herzegovina |
| Subdivision Type2: | Canton |
| Subdivision Name2: | Herzegovina-Neretva |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Mostar |
| Unit Pref: | Imperial |
| Area Total Km2: | 12.43 |
| Population As Of: | 2013 |
| Population Total: | 1291 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 43.2572°N 17.8864°W |
Buna (Serbian Cyrillic: Буна) is a populated settlement at the confluence of the Buna river and Neretva river some 10 km downstream the Neretva and south of Mostar, Herzegovina-Neretva Canton, Bosnia and Herzegovina.
The famous source of the Buna river (Vrelo Bune)[1] [2] is a strong karstic spring. The Buna river flows west from its source for approximately 9 kilometres and joins the Neretva near this village that has taken its name from the river.
According to the 2013 census, its population was 1,291.[3]
| Number | Percentage | ||
|---|---|---|---|
| 1,120 | 86.6% | ||
| 149 | 11.5% | ||
| 2 | 0.2% | ||
| other/undeclared | 20 | 1.5% | |
| Total | 1,291 | 100% |