Territory of New Guinea

Infobox Former Country
native_name = New Guinea
conventional_long_name = Territory of New Guinea
common_name = New Guinea
continent = Oceania
region = New Guinea
status=League of Nations Mandate
empire=Australia
status_text=Mandate
year_start = 1919
year_end = 1949
date_start = June 28
date_end =
event_start = Treaty of Versailles
event_end= Union with Papua
p1 = German New Guinea
flag_p1 = Flag of the German Empire.svg
s1 = Territory of Papua and New Guinea
flag_s1 = Flag of Australia.svg

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flag_type =


image_map_caption =
capital = Canberra
common_languages = English (official), Austronesian languages, Papuan languages, English creoles
title_leader = King
leader1 = List of British monarchs
title_representative = Administrator
representative1 = List of colonial heads of New Guinea
title_deputy = Prime Minister
deputy1 = List of Prime Ministers of Australia
era =
currency = Australian Pound

Territory of New Guinea was the name given to the Australia-controlled, League of Nations-mandated territory in the north eastern part of the island of New Guinea, and surrounding islands, between 1920 and 1949. The south-eastern part of the island of New Guinea was a separate Australian colony, the Territory of Papua, until 1949.

The Australian mandate was based on the previous German New Guinea, which was captured and occupied by Australian forces in 1914, during World War I. Much of the Territory of New Guinea was occupied by Japanese forces during World War II; Rabaul, on the island of New Britain was a major Japanese base (see New Guinea campaign).

Under the Papua New Guinea Provisional Administration Act, (1945-46), the territories of Papua and New Guinea were combined in an administrative union.