Hohenahr (German pronunciation: [ˈhoːənˌʔaːɐ̯]) is a municipality in the Lahn-Dill-Kreis in Hesse, Germany.

Its constituent communities of Ahrdt and Mudersbach are on the shores of the Aartalsee (lake).

The centres of Ahrdt, Altenkirchen, Erda (administrative seat), Großaltenstädten, Hohensolms and Mudersbach are all part of the community.

As part of Hesse's municipal reforms, the constituent communities of Erda, Hohensolms and Ahrdt first merged voluntarily in 1972, followed a few months later[when?]

The thickly wooded community lies in the area of the former Solms Counties, which gave the arms the gold and blue.