The Brissago Islands (Italian: Isole di Brissago) are a group of two islands located in the Swiss part of Lake Maggiore close to Ronco sopra Ascona and Brissago. Both islands belong to the district of Locarno , in the canton of Ticino.

San Pancrazio (also known as Grande Isola) is larger and is well known for its botanical garden. On the smaller island, known as Isolino, Isola Piccola or Isola di Sant’Apollinare, the vegetation is allowed to develop naturally. Both benefit from the mild climate provided by the lake. The minimum distance from the shore is 1,040 metres for San Pancrazio and 930 metres for Sant'Apollinare, making them the farthest islands from the shore in Switzerland.