Irserbach
Location
Country	Germany
States	Rhineland-Palatinate North Rhine-Westphalia
Physical characteristics
Mouth
• location	Sieg
• coordinates	50°46′52″N 7°37′39″E / 50.7812°N 7.6274°E / 50.7812; 7.6274
Length	12.4 km (7.7 mi)[1]
Basin features
Progression	Sieg→ Rhine→ North Sea

Irserbach (also: Irsenbach, Scharfenbach) is a river of Rhineland-Palatinate and North Rhine-Westphalia, Germany. It flows into the Sieg near Windeck.

• List of rivers of Rhineland-Palatinate
• List of rivers of North Rhine-Westphalia