Agno is a historic town and a municipality in the district of Lugano in the canton of Ticino in Switzerland. Due to its position on Lake Lugano it is popular with tourists, and hosts summer festivals, with two hotels and several camping grounds. It is served by the Lugano-Agno airport.

Lake Lugano is a glacial lake which is situated on the border between southern Switzerland and northern Italy. The lake, named after the city of Lugano, is situated between Lake Como and Lago Maggiore. It was cited for the first time by Gregory of Tours in 590 with the name Ceresio, a name which is said to have derived from the Latin word cerasus, meaning cherry, and refers to the abundance of cherry trees which at one time adorned the shores of the lake. The lake appears in documents in 804 under the name Laco Luanasco.