Netherlands New Guinea (Dutch: Nederlands-Nieuw-Guinea) refers to the West Papua region while it was an overseas territory of the Kingdom of the Netherlands from 1949 to 1962. Until 1949 it was a part of the Dutch East Indies. It was commonly known as Dutch New Guinea. It contained what are now Indonesia's two easternmost provinces, Papua and West Papua (administered under a unified government prior to 2003 under the name Irian Jaya).

Netherlands New Guinea (Dutch: Nederlands-Nieuw-Guinea) refers to the West Papua region while it was an overseas territory of the Kingdom of the Netherlands from 1949 to 1962. Until 1949 it was a part of the Dutch East Indies. It was commonly known as Dutch New Guinea. It contained what are now Indonesia's two easternmost provinces, Papua and West Papua (administered under a unified government prior to 2003 under the name Irian Jaya).