| Official Name: | Belja |
| Settlement Type: | Village |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | District |
| Subdivision Type2: | Municipality |
| Unit Pref: | Imperial |
| Population As Of: | 2002 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
Belja (Serbian: Беља) is a village in Serbia, in the municipality of Aleksinac in Nisava district. According to the census in 2002 the population was 43 (a reduction from the 1991 census of 1991 when there were 56 residents).[1]
There are 36 adult residents and the average age is 51.7 years (52.1 for men and 51.3 for women). The village has 20 households, and the average number of occupants per household is 2.15.
This settlement is fully settled Serbs (according to the 2002 census) and in the last three censuses has recorded a decline in population.