Ulfa (river)
{{Short description|River in Germany}}
{{Expand German|Ulfa (Fluss)|topic=geo|date=September 2011}}
{{Infobox river
| name =Ulfa
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| mouth_location = Nidda
| mouth_coordinates = {{coord|50.4389|N|9.0231|E|source:wikidata-and-enwiki-cat-tree_region:DE|display=it}}
| progression = {{RNidda}}
| subdivision_type1 = Country
| subdivision_name1 = Germany
| subdivision_type2 = State
| subdivision_name2 = Hesse
| length = {{convert|11.3|km|abbr=on}} {{GeoQuelle|DE-HE|WRRL}}
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Ulfa is a river of Hesse, Germany. It flows into the Nidda in Unter-Schmitten.