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Gleierbach
Location
Country	Germany
State	North Rhine-Westphalia
Physical characteristics
Mouth
• location	Lenne
• coordinates	51°09′51″N 8°18′44″E / 51.1641°N 8.3123°E / 51.1641; 8.3123
Length	7.1 km (4.4 mi)[1]
Basin features
Progression	Lenne→ Ruhr→ Rhine→ North Sea

Gleierbach (also: Gleiderbach, in its upper and middle course also Westernah or Westernahbach) is a river of North Rhine-Westphalia, Germany. It flows through the municipality Schmallenberg. It is a right tributary of the Lenne, which it joins in Gleidorf, east of Schmallenberg.

• List of rivers of North Rhine-Westphalia