Arnsbach is a village in the Schwalm-Eder-Kreis, northern Hesse, Germany.

On the northeastern foot of the Altenburg (castle) lies the early settlement of Blankenhain.

The district of Arnsbach is located in the west of the Borken basin and has a size of approximately 688 hectares.

The bathing lake of Stockelache was created from a lignite mine in the area.

Southeast, on the summit of the mountain Altenburg and partly on Arnsbacher district, are the remains of an Iron Age circular wall called Altenburg, or Altenburg at Römersberg.