Osterbach may refer to:

Osterbach (Biber), a river of Bavaria, Germany, tributary of the Biber Osterbach (Eder), a river of Hesse, Germany, tributary of the Eder Osterbach (Fulda), a river of Hesse, Germany, tributary of the Fulda Osterbach (Gersprenz), a river of Hesse, Germany, headwater of the Gersprenz