| Official Name: | Grdanovac |
| Native Name: | Грдановац |
| Settlement Type: | Village |
| Pushpin Map: | Bosnia |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Bosnia and Herzegovina |
| Subdivision Type1: | Entity |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Kostajnica |
| Unit Pref: | Metric |
| Area Total Km2: | 4,44 |
| Population As Of: | 2013 |
| Population Total: | 205 |
| Population Density Km2: | 46 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 45.1878°N 16.4836°W |
| Elevation M: | 218 |
Grdanovac (Cyrillic: Грдановац) is a village in the municipality of Kostajnica, Republika Srpska, Bosnia and Herzegovina.[1]