| Official Name: | Gostun |
| Native Name: | Гостун |
| Settlement Type: | Village |
| Pushpin Map: | Bulgaria |
| Pushpin Label Position: | Location in Bulgaria |
| Subdivision Name: |  Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Blagoevgrad Province |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Bansko |
| Leader Title: | Suffragan Mayor |
| Leader Name: | Iliya Belev |
| Area Total Km2: | 52,425 |
| Population As Of: | 15-12-2010 [1] |
| Population Note: | GRAO |
| Population Total: | 69 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Postal Code Type: | Postal Code |
| Postal Code: | 2773 |
| Area Code: | 074409 |
| Coordinates: | 41.8°N 64°W |
| Elevation M: | 1028 |
Gostun (bg|Гостун) is a village (село) in southwestern Bulgaria, located in the Bansko Municipality (Bulgarian: Община Банско) of the Blagoevgrad Province (Bulgarian: област Благоевград). It is located on the eastern slopes of the Rhodope Mountains, east of Mesta river 17 kilometers southeast of Bansko, 54 kilometers southeast of Blagoevgrad and 103 kilometers southeast of Sofia.
Gostun is the birthplace of Ivan Lebanov - the first Bulgarian to win a Winter Olympic medal in 1980.