| Deba River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Spain |
| Subdivision Type2: | State |
| Subdivision Name2: | Basque Country |
| Length: | 58km (36miles) |
| Discharge1 Avg: | 13.4m3/s |
| Mouth Coordinates: | 43.2997°N -2.3553°W |
| Tributaries Left: | Angiozar River, Aramaio River, Aranerreka River, Kilimon River, Ego River |
| Tributaries Right: | Oñate River |
The Deba River (Basque: Deba ibaia; Spanish; Castilian: río Deva) is a river in the Basque Country, Spain. It rises in Arlaban, into Araba province lands, and flows into the Atlantic Ocean, in the Bay of Biscay, in Deba, Gipuzkoa.