| Official Name: | Gandajika |
| Settlement Type: | Commune |
| Pushpin Map: | Democratic Republic of the Congo |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Democratic Republic of the Congo |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Lomami |
| Subdivision Type2: | Territory |
| Subdivision Name2: | Gandajika |
| Population As Of: | 2012 |
| Population Total: | 146217 |
| Population Density Km2: | auto |
| Timezone: | Central Africa Time |
| Utc Offset: | +2 |
| Coordinates: | -6.75°N 81°W |
| Elevation M: | 806 |
Gandajika or Ngandajika is a town in Lomami province of the Democratic Republic of the Congo. It is the administrative center of the territory of the same name.