| Official Name: | Ratkovac |
| Native Name: | Ратковац |
| Settlement Type: | Village (Selo) |
| Pushpin Map: | Serbia |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Kolubara |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Lajkovac |
| Unit Pref: | Imperial |
| Population As Of: | 2011 |
| Population Total: | 314 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 44.3344°N 20.1°W |
| Elevation M: | 174 |
Ratkovac is a village in the municipality of Lajkovac, Serbia. According to the 2011 census, the village has a population of 314 inhabitants.[1]
| 1948 | 1953 | 1961 | 1971 | 1981 | 1991 | 2002 | 2011 | |
| 647 | 644 | 581 | 504 | 471 | 396 | 378 | 314 |