| Gologan | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Galați County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Măcișeni, Costache Negri |
| Length: | 28km (17miles) |
| Source1: | near Măcișeni |
| Source1 Coordinates: | 45.8983°N 27.7514°W |
| Source1 Elevation: | 220m (720feet) |
| Mouth: | Geru |
| Mouth Location: | Costache Negri |
| Mouth Coordinates: | 45.6925°N 27.6986°W |
| Mouth Elevation: | 42m (138feet) |
| Basin Size: | 71km2 |
| Tributaries Right: | Ciungi |
| Custom Label: | River code |
| Custom Data: | XII.1.81a.3 |
The Gologan is a left tributary of the river Geru in Romania. It flows into the Geru in Costache Negri.[1] Its length is 28km (17miles) and its basin size is 71km2.