| Official Name: | Donji Dubac |
| Settlement Type: | Village |
| Pushpin Map: | Serbia |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | District |
| Subdivision Name1: | Moravica District |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Lučani |
| Unit Pref: | Metric |
| Area Total Km2: | 26.88 |
| Population As Of: | 2011 |
| Population Total: | 411 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 43.6725°N 20.3231°W |
| Elevation M: | 788 |
Donji Dubac is a village in the municipality of Lučani, Serbia. According to the 2002 census, the village has a population of 526 people.[1]