Ilsbach

{{short description|River in Germany}}

{{Expand German|topic=geo|date=October 2011|Ilsbach (Seenbach)}}

{{Infobox river

| name =Ilsbach

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| mouth_location = Seenbach

| mouth_coordinates = {{coord|50|36|47|N|09|01|45|E|display=it|region:DE_type:river_source:GNS-enwiki}}

| progression = Seenbach→ {{ROhm}}

| subdivision_type1 = Country

| subdivision_name1 = Germany

| subdivision_type2 = State

| subdivision_name2 = Hesse

| length_km = 20.7

| length_ref = {{GeoQuelle|DE-HE|WRRL}}

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The Ilsbach (in its upper course: Streitbach, in its middle course: Sausel) is a river of Hesse, Germany. It is a 20.7 km long, right-bank tributary of the Seenbach and flows into it in Mücke.

The 48.13 km² catchment area of the Ilsbach lies in the Vogelsberg and is drained to the North Sea via the Seenbach, the Ohm, the Lahn and the Rhine.