Holzbach may refer to:

• Holzbach, a municipality in the Rhein-Hunsrück-Kreis in Rhineland-Palatinate, Germany

Rivers of Baden-Württemberg, Germany

• Holzbach (Soppenbach), left tributary of the Soppenbach

Rivers of Hesse, Germany

• Holzbach (Diemel), left tributary of the Diemel
• Holzbach (Elbbach, Hadamar), left tributary of the Elbbach in Hadamar
• Holzbach (Elbbach, Gemünden), left tributary of the Elbbach in Gemmünden
• Holzbach (Schweinfe), right tributary of the Schweinfe
• Holzbach (Usa), right tributary of the Usa

Rivers of North Rhine-Westphalia, Germany

• Holzbach (Ahse), left tributary of the Ahse
• Holzbach (Auelsbach), left tributary of the Auelsbach
• Holzbach (Belgenbach), left tributary of the Belgenbach
• Holzbach (Dickopsbach), right tributary of the Dickopsbach
• Holzbach (Ems), left tributary of the Ems
• Holzbach (Emscher), right tributary of the Emscher
• Holzbach (Erft), right tributary of the Erft
• Holzbach (Finkenbach), right tributary of the Finkenbach

Rivers of Saarland, Germany

• Holzbach (Hochwald), in the Schwarzwälder Hochwald