The Isla Magdalena national park is a 1,576 km2 (608 sq mi) protected area in Magdalena Island, Patagonia, Chile. It was created in 1967 as Forest Reserve and was reclassified as a National Park in 1983. Puerto Gaviota in the south of the national park is considered particularly noteworthy. In addition to larger Atilio island in the north, there are a number of smaller islands in the national park.
The national park is characterized by a variety of sea-birds (including penguins and cormorants) and vegetation typical of the moderate-cold zone. The Isla Magdalena climate has an annual average temperature of 6 to 8 °C (43 to 46 °F) and an annual precipitation of approximately 4,000 mm (157 in) per year. The park can best reached by sea from the ports Puerto Cisnes or Puerto Puyuhuapi. On the island, no infrastructure exists.