Neustädter Rathaus, Baroque town hall in Hanau, Germany.

The Neustädter Rathaus is a baroque structure in Hanau built with red Franconian sandstone and features a front gable displaying Count Johann Reinhard III's double coat of arms. The building comprises multiple floors and now houses an exhibition about the building's history and Hanau's New Town.

The town hall was constructed between 1723 and 1733 following designs by architect Christian Ludwig Hermann. After destruction in World War II, it was subsequently fully restored.

The front gable carries the double coat of arms of Count Johann Reinhard III and his wife Dorothea Friederike of Brandenburg-Ansbach, flanked by allegorical figures of Justice with scales, sceptre and eagle, and Peace with a golden torch, book and crane. The cast-iron balcony bears the gilded arms of the Neustadt with its patron Hanovia and the year 1733.

The town hall stands on the north side of the Marktplatz, in line with the Wallonisch-Niederländische Kirche; the sightline between them runs through the Paradiesgasse. The Brothers Grimm national monument has stood directly in front of the building since 18 October 1896. The building was fully renovated from 2018 to 2022, and the foyer is used for exhibitions.

The tower was added in 1755, after the main building was finished, and received a clock and a carillon of 18 bells. A carillon was reinstalled during the post-war rebuild. It plays at set hours: a morning chorale by Johann Georg Ahle at 10:00, a canon from Paul Hindemith's op. 45 II at noon, a Hanau minuet of 1755 at 16:00 and a folk tune of 1860 at 18:00.