Brensbach is a community in the Odenwaldkreis (district) in Hesse, Germany.

Brensbach lies in the northern Odenwald in the Gersprenz valley

Brensbach borders in the north on the towns of Groß-Bieberau and Reinheim (although this boundary is quite short) and the community of Otzberg (all in Darmstadt-Dieburg), in the east on the community of Höchst and the town of Bad König, in the south on the communities of Brombachtal and Reichelsheim and in the west on the communities of Fränkisch-Crumbach (all in the Odenwaldkreis) and Fischbachtal (Darmstadt-Dieburg).