| Official Name: | Kostadinovac |
| Native Name: | Костадиновац |
| Settlement Type: | Village |
| Pushpin Map: | Serbia |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | District |
| Subdivision Name1: | Nišava District |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Merošina |
| Unit Pref: | Imperial |
| Population As Of: | 2002 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 43.2436°N 21.6667°W |
Kostadinovac is a village situated in Merošina municipality in Serbia.[1]