The Rapperswil Peninsula is a peninsula in Rapperswil-Jona (canton of St. Gallen, Switzerland) in Lake Zurich. To the northwest, the () is situated. To the south, the Seedamm causeway and the Holzbrücke Rapperswil-Hurden link the opposite shores of Lake Zurich and the Obersee (upper Lake Zurich), respectively.
Kapuzinerkloster Rapperswil (Capuchin monastery), Rapperswil Castle and partially the Altstadt of the city of Rapperswil are located on this rocky peninsula. In Swiss Standard German, it is called on its western lower side, Lindenhof on its western hilltop, and on its eastern hilltop.
Although it is a peninsula, neither the name "Rapperswil Peninsula" nor the corresponding German terms or are commonly used.