Alas Purwo National Park is situated on Blambangan Peninsula in the Banyuwangi Regency, at the southeastern tip of East Java province.

The park is located in Blambangan Peninsula at the southeastern tip of Java island, along the shore of the strait across Bali.

With an area of 434 km2, the park is made up of mangroves, savanna, lowland monsoon forests, and coral-fringed beaches.

An internationally renowned surf break peels along the edge of the park at Plengkung on Grajagan Bay.

The flora protected in this national park include Terminalia catappa, Calophyllum inophyllum, Sterculia foetida, Barringtonia asiatica, and Manilkara kauki.