Sulzbach () is the most populous residential district (of five) of the city of Billigheim, Germany. It is located in Neckar-Odenwald-county, west of Billigheim and east of Mosbach.
Sulzbach has about 1803 inhabitants, who are largely Christian. A large number of the inhabitants are Roman Catholic, and there is also a significant Evangelical community in the city.
On 1 February 1974, Sulzbach was incorporated into Billigheim.