| Official Name: | Boljun |
| Other Name: | Bogliuno |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Label Position: | bottom |
| Coordinates: | 45.3019°N 14.1219°W |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Lupoglav |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 7.2 |
| Population As Of: | 2021 |
| Population Total: | 64 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 52434 Boljun |
| Area Code: | 052 |
Boljun (Italian: Bogliuno) is a village in the municipality of Lupoglav, in Istria County, Croatia.[2]
According to the 2021 census, its population was 64. In 2001, the village had 73 residents.[3] According to the 1921 census, the majority of the population was Italian.[4]