Radio Zürisee is a private Swiss radio station based in Rapperswil, St. Gallen. Founded in 1983, it was one of the first private radio stations in Switzerland. The station broadcasts to the cantons of Zürich, St. Gallen, Schwyz, Schaffhausen, and Glarus, reaching approximately 170,000 daily listeners.

Radio Zürisee focuses on music from the 80s and 90s, complemented by entertainment, local events, and regional news. The station prides itself on being close to its listeners and the local community. In addition to traditional radio broadcasting, Radio Zürisee is available via DAB+, online streaming, and mobile apps.

A unique feature of Radio Zürisee is its "Loft" - a multifunctional event space located in the old Hotel Post building opposite Rapperswil railway station. This space serves as both a broadcasting studio and a venue for various events, making the radio station a tangible, three-dimensional experience for its audience.

In January 2023, ownership of Radio Zürisee changed hands, with Fabian Villiger Management GmbH acquiring the majority stake from Zürichsee Medien AG. The station continues to innovate, adapting to the changing media landscape while maintaining its strong regional focus.