Deba River

{{Infobox river

| name = Deba River

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| image = Elgoibar río Deba.JPG

| image_size = 350

| image_caption = The Deba River as seen from Elgoibar

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| subdivision_type1 = Country

| subdivision_name1 = Spain

| subdivision_type2 = State

| subdivision_name2 = Basque Country

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| length_km = 58

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| discharge1_min =

| discharge1_avg = {{convert|13.4|m3/s|cuft/s|abbr=on}}

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| mouth =

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| mouth_coordinates = {{coord|43|17|59|N|2|21|19|W|display=inline,title}}

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| tributaries_left = Angiozar River, Aramaio River, Aranerreka River, Kilimon River, Ego River

| tributaries_right = Oñate River

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The Deba River ({{langx|eu|Deba ibaia}}; {{langx|es|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.{{cite book |last1=Millanes |first1=F. |last2=Ortega |first2=M. |last3=Solera |first3=P. |last4=Figueiredo |first4=H. |last5=Ugarte |first5=J. |editor-last1=Magalhaes |editor-first1=Filipe |editor-last2=Pacheco |editor-first2=Pedro |date=2015 |title=Multi-Span Large Bridges |chapter=Viaduct over river Deba in the "Y-Basque" high speed railway linein the north of Spain |url=https://books.google.com/books?id=r8sdCgAAQBAJ |publisher=CRC Press |pages=239–246 |isbn=9781315687193 |access-date=February 1, 2025}}