Heimbach (German pronunciation: [ˈhaɪmbax] ^ⓘ) is a town in the district of Düren of the state of North Rhine-Westphalia, Germany. It is located on the river Roer, in the Eifel hills, approx. 20 km south of Düren. Heimbach has the smallest population of any town in North Rhine-Westphalia.

The town districts of Heimbach are Blens (300 residents), Düttling (85 residents), Hasenfeld (1200 residents), Hausen (270 residents), Hergarten (500 residents) and Vlatten (900 residents), which prior to 1972 were villages with their own administration. Heimbach main town has about 1100 residents. Between Hausen and Hergarten lies the hamlet of Walbig, and between Hasenfeld and Schmidt (City of Nideggen) is the hamlet of Buschfelder Hof, which formerly belonged to Blens.

Heimbach and the city's Hengebach Castle was the seat of the local noble family which inherited the County of Jülich in 1207, with Heimbach annexed to the County (later the Duchy) since 1237.

After the fire of 1687 the city of Heimbach was rebuilt to house the town's population; however, the castle of Hengebach was left a ruin until 1904 when restoration work began. Now restored, the castle is owned and operated as a tourist attraction by the city of Heimbach. The castle is located on a rocky outcrop in the middle of Heimbach. Today it is used as a restaurant and a location for public events.

1797 until 1814, Heimbach belonged to Department of Roer (Département de la Roer) within the French First Republic and the First French Empire.

1815 Heimbach became part of the Prussian province Grand Duchy of the Lower Rhine, later the Rhine Province, within the German Confederation, and later the German Empire.

Heimbach was connected to the railway network 1903 via Düren. Tourism had been the main reason for connecting Heimbach.

Traces of Roman presence had been found in Hasenfeld. 1739 an oratory was established by the parish of Heimbach. In 20th century Hasenfeld became larger than Heimbach main town.