Heimborn is an Ortsgemeinde – a community belonging to a Verbandsgemeinde – in the Westerwaldkreis in Rhineland-Palatinate, Germany.

The agriculturally structured residential community belongs to the Verbandsgemeinde of Hachenburg, a kind of collective municipality.

The community lies in the Westerwald between Limburg and Siegen, at the forks of the Nister in the middle of the Kroppach Switzerland.

South of the community runs Bundesstraße 414, leading from Hohenroth to Hachenburg.

The nearest InterCityExpress stop is the railway station at Montabaur on the Cologne-Frankfurt high-speed rail line.