Ulmbach may refer to:

Ulmbach (Kinzig), a river of Hesse, Germany, tributary of the Kinzig Ulmbach (Lahn), a river of Hesse, Germany, tributary of the Lahn Peciu Nou (German name Ulmbach), a commune in Timiș County, Romania Ulmbach, a district of the town Steinau an der Straße in Hesse, Germany