The Bismarck Archipelago is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea. Its area is about 50,000 square km.
The Admiralty Islands are an archipelago group of 18 islands in the Bismarck Archipelago, to the north of New Guinea in the South Pacific Ocean. These are also sometimes called the Manus Islands, after the largest island.
The Kaniet Islands are the easternmost group islands within the Western Islands of the Bismarck Archipelago, Papua New Guinea. It consists four islands and one islet. Their coordinates are 0°54′S 145°32′E, located north-east of the Hermit Islands. Sae Island is a nearby island often subsumed under the Kaniet(-Sae) Islands, albeit the two are distinct. Another name for the Kaniet(-Sae) Islands is "Anchorite Islands".

The Asian and Pacific theatre of World War I consisted of various military engagements that took place on the Asian continent and on Pacific islands. They include naval battles, the Allied conquest of German colonial possessions in the Pacific Ocean and China, and an anti-Russian rebellion in Russian Turkestan. The most significant military action was the careful and well-executed Siege of Tsingtao in China, but smaller actions were also fought at Bita Paka and Toma in German New Guinea.
Aua is an island in the Bismarck Archipelago. It is part of the Western Islands, region and Manus Province of northern Papua New Guinea.

The demonic tube-nosed fruit bat is a species of bat in the family Pteropodidae. It is endemic to Papua New Guinea. The holotype specimen was collected in 1979 on New Ireland, in the Bismarck Archipelago. It was described as a new species in 1983. The range of the species may extend to other islands, however the extent of the range is not presently known.

Hermann Philipp Detzner was a German engineer and surveyor, who served as an officer in the German colonial security force (Schutztruppe) in Kamerun (Cameroon) and German New Guinea. He gained fame for evading capture after Australian troops invaded German New Guinea at the start of World War I.

German New Guinea consisted of the northeastern part of the island of New Guinea and several nearby island groups and was the first part of the German colonial empire. The mainland part of the territory, called Kaiser-Wilhelmsland, became a German protectorate in 1884. Other island groups were added subsequently. New Pomerania, the Bismarck Archipelago, and the northern Solomon Islands were declared a German protectorate in 1885; the Caroline Islands, Palau, and the Mariana Islands were bought from Spain in 1899; the protectorate of the Marshall Islands was bought from Spain in 1885 for $4.5 million by the 1885 Hispano-German Protocol of Rome; and Nauru was annexed to the Marshall Islands protectorate in 1888.

The great flying fox, also known as the greater flying fox or Bismarck flying fox, is a species of megabat in the genus Pteropus, found throughout lowland areas of New Guinea and in the Bismarck Archipelago. Conflicting evidence suggests that its closest relative is either the spectacled flying fox or, jointly, the Pelew and insular flying foxes. Two subspecies are recognized. At up to 1.6 kg (3.5 lb) in weight, it is among the heaviest bats in the world and the largest bat in Melanesia. It is a gregarious animal which roosts with hundreds or thousands of individuals. In part due to its wide variation in color, it has many taxonomic synonyms, including Pteropus degener, Pteropus papuanus, and Pteropus sepikensis. It may forage during the day or night in search of fruit, including figs or fruits from the family Sapotaceae. It is considered a least-concern species by the IUCN, though its numbers have been negatively impacted by what appeared to be a disease, as well as by hunting for bushmeat that occurs across its range.

The Hermit Islands are a group of 17 islands within the Western Islands of the Bismarck Archipelago, Papua New Guinea. Their coordinates are 1°30′S 145°4′E.
The Kaniet Islands are the easternmost group islands within the Western Islands of the Bismarck Archipelago, Papua New Guinea. It consists four islands and one islet. Their coordinates are 0°54′S 145°32′E, located north-east of the Hermit Islands. Sae Island is a nearby island often subsumed under the Kaniet(-Sae) Islands, albeit the two are distinct. Another name for the Kaniet(-Sae) Islands is "Anchorite Islands".

Lihir Group is an island group in Papua New Guinea, located north of New Ireland, at 3°S 152.583333°E. It is a part of Bismarck Archipelago. Largest island of the group is Lihir, other islands include: Mali, Mahur, Masahet and Sanambiet.

Lolobau Island is an island in the Bismarck Sea, within the West New Britain Province of the Islands Region, in northern Papua New Guinea.

Los Negros Island is the third largest of the Admiralty Islands. It is significant because it contains the main airport of Manus Province on its eastern coastline, at Momote. It is connected to Lorengau, the capital of the province, on Manus Island via a highway and bridge across the Lonui Passage, which separates Los Negros from the larger Manus Island.

Melanesia is a subregion of Oceania extending from New Guinea island in the southwestern Pacific Ocean to the Arafura Sea, and eastward to Tonga.

Micronesian outliers are some islands near New Guinea inhabited by Micronesian settlers. All of the Micronesian outliers are in the Bismarck Sea and belong to Papua New Guinea. These islands are also known under the name Western Islands

Mussau Island is the largest island of St Matthias Islands, Papua New Guinea, at 1°25′01″S 149°37′59″E. It is one of the northernmost islands of Papua New Guinea. The island is a noted Biodiversity hotspot with pristine primeval Rainforest covering most of Mussau's hilly landscape.The island has over 243 endemic plant species as well as at least 47 native butterfly species.

New Britain is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea and from New Ireland by St. George's Channel. The main towns of New Britain are Rabaul/Kokopo and Kimbe. The island is roughly the size of Taiwan. While the island was part of German New Guinea, it was named Neupommern.

New Ireland or Latangai, is a large island in Papua New Guinea, approximately 7,404 km2 (2,859 sq mi) in area with c. 120,000 people. It is named after the island of Ireland. It is the largest island of New Ireland Province, lying northeast of the island of New Britain. Both islands are part of the Bismarck Archipelago, named after Otto von Bismarck, and they are separated by Saint George's Channel. The administrative centre of the island and of New Ireland province is the town of Kavieng located at the northern end of the island. While the island was part of German New Guinea, it was named Neumecklenburg.

The Ninigo Islands are a group of 31 islands within the Western Islands of the Bismarck Archipelago, Papua New Guinea. Their coordinates are 1°16′S 144°15′E.
Sae Island is the northernmost island within the Western Islands of the Bismarck Archipelago, Papua New Guinea. It is located just north-west of the Kaniet Islands, under which it is often subsumed, although the two are distinct. Another name for the Kaniet(-Sae) Islands is "Anchorite Islands".

Seri's sheath-tailed bat is a species of sac-winged bat in the family Emballonuridae. It is found in the Bismarck Archipelago and Yapen Island (Indonesia). Its natural habitat is caves.
Spilaethalida turbida is a moth of the family Erebidae first described by Arthur Gardiner Butler in 1882.

The Tanga Islands are an island group in Papua New Guinea, located north-east of New Ireland and part of the Bismarck Archipelago.Tanga is made up of four main islands—Boeng, Maledok, Lif and Tefa—and a number of smaller, uninhabited islands. Boeng consists entirely of a raised, relatively flattopped plateau of Pleistocene, coralline limestone, which rises up to 170 m above sea level (asl.) and has sheer cliffs around a large part of its perimeter. The islands are the remnants of a stratovolcano which collapsed to form a caldera. Lif (283 m), Tefa (155 m), and Malendok (472 m) islands are on the caldera rim, while Bitlik and Bitbok islands are lava domes constructed near the center of the caldera.

Tolokiwa Island, also known as Lottin Island, is an island in the Bismarck Sea. The island is volcanic in origin and part of the Bismarck Archipelago.
The Western Islands are a group of islands in the Bismarck Archipelago, and within Manus Province of the Islands Region, in northern Papua New Guinea.
Wuvulu Island is part of the Western Islands of the Bismarck Archipelago in the western Pacific Ocean, part of Manus Province, Papua New Guinea. It is the westernmost island of the thirteen island groups that make up island chain in the archipelago. It is an island of volcanic origin encircled by a coral reef with a maximum height of three meters above sea level.