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 municipality of Gilserberg, in the east on the town of Schwalmstadt and the municipality of Willingshausen (all three in the Schwalm-Eder-Kreis), in the southeast on the municipality 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).
Neustadt, as well as the core municipality known as Neustadt, has centres known as Mengsberg, Momberg and Speckswinkel.
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 2025 had 36 member towns â all named Neustadt â in seven Central European countries.