Neustadt is a town in the Marburg-Biedenkopf district in Hesse, Germany.

Neustadt lies in the Middle Hessian Bergland ("Highland") at the eastern end of Marburg-Biedenkopf district.

Neustadt borders in the north on the community of Gilserberg, in the east on the town of Schwalmstadt and the community of Willingshausen (all three in the Schwalm-Eder-Kreis), in the southeast on the community of Antrifttal, in the south on the town of Kirtorf (both in the Vogelsbergkreis), and in the west on the town of Stadtallendorf (Marburg-Biedenkopf).

After municipal elections on 26 March 2006, the town council is arranged thus: Neustadt's coat of arms, like many throughout western Germany, depicts Saint Martin of Tours cutting off a piece of his cloak for a poor man and the Wheel of Mainz.

Neustadt is a member of the international town friendship called the Arbeitsgemeinschaft Neustadt in Europa, which as of 2005 had 34 member towns – all named Neustadt – in five countries.