Rathaus Rapperswil, Medieval town hall at Hauptplatz, Rapperswil-Jona, Switzerland.

Rathaus Rapperswil is a solid stone building with late Gothic features and a distinctive southern tower standing on the main square. It houses a restaurant and café along with the city archives, stained glass collections, silverware, and paintings on display.

The building was constructed around 1470, replacing an earlier fortified tower from the 13th century that stood on the same site. The distinctive southern tower was added in 1614 and has defined the square's appearance ever since.

The council chamber's late Gothic portal was carved from a single oak trunk, and the round council table was made by Conrad Lütbrand in 1618. The golden Julius banner, given by Cardinal Schiner on 24 June 1512 for Rapperswil soldiers who fought for Pope Julius II in Lombardy, hangs in the first-floor entrance hall. The Ratssaal still serves as the See-Gaster district court on Wednesdays.

The square is easily accessible on foot and well connected to the old town, making it easy to visit during a walking tour. Staff on site can provide information about access to the interiors and special exhibitions.

The Eis-zwei-Geissebei custom is tied to the siege and burning of Rapperswil by Zürich troops on 24 February 1350, when residents are said to have handed food to hungry children from their windows. The building itself is not the setting; the custom is still practised in the old town on Shrove Tuesday.