Puerto Cisnes is a town and seaport in Cisnes commune, Aysén Province, Aysén del General Carlos Ibáñez del Campo Region in the Chilean Patagonia. The town is on the Puyuhuapi Channel at the outflow of Cisnes River. The town is located in the northwestern portion of the Aysén Region, an area that includes numerous islands, fjords and channels. The major island is Magdalena Island, which contains the national park that bears its name.