Hambach is a municipality in the district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany.

Hambach was first mentioned in 1290 in a necrology from "Stift St. Lubentius zu Dietkirchen".

From 1794 temporarily occupied by the French, the village became part of the Herzogtum Nassau, which was annexed to Prussia in 1866.

In 1890 a school was built, but it was closed due to short of pupils in 1936.

Hambach has a volunteer fire brigade, which was founded in 1971.