Castagnola is a village on the northern shore of Lake Lugano, below the mountain of Monte Brè, in the Swiss canton of Ticino.

Politically the village forms part of the Castagnola-Cassarate quarter of the city of Lugano, although until 1972 Castagnola-Cassarate was an independent municipality under the name Castagnola.

[1] Amongst its notable residents is the artist Angela Lyn.

[2] and Latvian poet couple Rainis and Aspazija, who lived here from 1905–20.

Carlo Cattaneo, Italian writer and philosopher, died here in 1869.