
The Gilbert Islands are a chain of sixteen atolls and coral islands in the Pacific Ocean about halfway between Papua New Guinea and Hawaii. They were the British colony of the Gilbert Islands from 1976 to 1979, succeeding to the Gilbert and Ellice Islands colony (1916–1975). They form the main part of Kiribati.

Abaiang, also known as Apaiang, Apia, and in the past, Charlotte Island, in the Northern Gilbert Islands, is a coral atoll of Kiribati, located in the west-central Pacific Ocean. Abaiang was the home of the first missionary to arrive in Kiribati, Hiram Bingham II. Abaiang has a population of 5,502.

Abemama (Apamama) is an atoll, one of the Gilberts group in Kiribati, and is located 152 kilometres southeast of Tarawa and just north of the Equator. Abemama has an area of 27.37 square kilometres and a population of 3,299 as of 2015. The islets surround a deep lagoon. The eastern part of the atoll of Abemama is linked together by causeways making automobile traffic possible between the different islets. The outlying islands of Abatiku and Biike are situated on the southwestern side of the atoll.

Banaba is an island of Kiribati in the Pacific Ocean. A solitary raised coral island west of the Gilbert Island chain, it is the westernmost point of Kiribati, lying 185 miles (298 km) east of Nauru, which it is also the nearest neighbor to. It has an area of 6.0 km2, and the highest point on the island is also the highest point in Kiribati, at 81 metres (266 ft) high. Along with Nauru and Makatea, it is one of the important elevated phosphate-rich islands of the Pacific.

Beru is an atoll in the Southern Gilbert Islands in the Pacific Ocean, part of the Republic of Kiribati. Beru was previously known as Eliza, Francis Island, Maria, Peroat, Peru Island or Sunday. Beru is home of 2,051 inhabitants.

Butaritari is an atoll in the Pacific Ocean island nation of Kiribati. The atoll is roughly four-sided. The south and southeast portion of the atoll comprises a nearly continuous islet. The atoll reef is continuous but almost without islets along the north side. Bikati and Bikatieta islets occupy a corner of the reef at the extreme northwest tip of the atoll. Small islets are found on reef sections between channels on the west side. The lagoon of Butaritari is deep and can accommodate large ships, though the entrance passages are relatively narrow. It is the most fertile of the Gilbert Islands, with relatively good soils and high rainfall. Butaritari atoll has a land area of 13.49 km2 (5.21 sq mi) and a population of 3,224 as of 2015. During World War II, Butaritari was known by United States Armed Forces as Makin Atoll, and was the site of the Battle of Makin. Locally, Makin is the name of a separate but closest atoll, 3 kilometres to the northeast of Butaritari, but enough close to be seen. These two atolls share the dialect of Gilbertese language.

The Battle of Drummond's Island was a conflict between the United States Exploring Expedition and the village of Utiroa on April 1841 at Drummond's Island, which is now named Tabiteuea. The cause of the conflict was the disappearance of the American seaman John Anderson, who was suspected, with no evidence, to have been murdered by the village natives. In retaliation, the members of the expedition killed twelve of the natives and burned the village of Utiroa to the ground.

The Gilbert and Ellice Islands were a British protectorate from 1892 and colony, from 12 January 1916 until 1 January 1976, part of the British Empire. The history of the colony was mainly characterized by phosphate mining in Ocean Island. In October 1975, these islands were de jure divided into two separated colonies which became independent nations shortly thereafter, Tuvalu (1978) and Kiribati (1979).

The Gilbert and Marshall Islands campaign were a series of battles fought from November 1943 through February 1944, in the Pacific theatre of World War II between the United States and Japan. They were the first steps of the drive across the central Pacific by the United States Pacific Fleet and Marine Corps. The purpose was to establish airfields and naval bases that would allow air and naval support for upcoming operations across the Central Pacific. Operation Galvanic and Operation Kourbash were the code names for the Gilberts campaign that included the seizures of Tarawa and Makin. Operation Flintlock and Operation Catchpole were aimed at capturing Japanese bases at Kwajalein, Eniwetok, and Majuro in the Marshall Islands.

On 20 November 1943, simultaneous landings were made by United States Marine Corps forces on Tarawa and United States Army forces on Makin, two coral atolls located in the Gilbert Islands chain in the South-Central Pacific.

Kuria is an atoll, formed by a pair of islets, in the Central Gilbert Islands in Kiribati, northwest of Aranuka. The two islets, Buariki and Oneeke, are separated by a 20 metre wide channel on a shallow water platform, which is crossed by a bridge of the connecting road. The islands are surrounded by fringing reef which is broadest on the eastern side of Kuria. The population of Kuria was 1,046 in 2015.

Maiana is an atoll in Kiribati and is one of the Central Gilbert Islands. Maiana is 44 kilometres (27 mi) south of the capital island of South Tarawa and has a population of 1,982 as of 2015. The northern and eastern sides of the atoll are a single island, whilst the western edge consists of submerged reefs and many uninhabited islets, all surrounding a lagoon. The atoll is 14 kilometres (8.7 mi) long and is very narrow, with an average width of less than 1 kilometre (0.62 mi) and a total land area of 16.72 square kilometres (6.46 sq mi).

Makin is the name of an atoll, chain of islands, located in the Pacific Ocean island nation of Kiribati. Makin is the northernmost of the Gilbert Islands, with a population of 1,990.

Makin Airport is the airport serving Makin.

Marakei is a small atoll in the North Gilbert Islands. The central lagoon consists of numerous deep basins and surrounded by two large islands which are separated by two narrow channels. The atoll covers an area of approximately 40 km².

The Marshalls–Gilberts raids were tactical airstrikes and naval artillery attacks by United States Navy aircraft carrier and other warship forces against Imperial Japanese Navy (IJN) garrisons in the Marshall and Gilbert Islands on 1 February 1942. The Japanese garrisons were under the overall command of Vice Admiral Shigeyoshi Inoue, commander of the 4th Fleet. Japanese aircraft in the islands belonged to the IJN's 24th Air Flotilla under Rear Admiral Eiji Gotō. The U.S. warship forces were under the overall command of Vice Admiral William Halsey, Jr.

Nikunau is a low coral atoll in the Gilbert Islands and forms a council district of the Republic of Kiribati. It consists of two parts,, joined by an isthmus about 150 metres (490 ft) wide.

Nonouti is an atoll and district of Kiribati. The atoll is located in the South Gilbert Islands, 38 km north of Tabiteuea, and 250 km south of Tarawa. The atoll is the third largest in the Gilbert Islands and is the island where the Catholic religion was first established in Kiribati, in 1888.

North Tarawa or in Gilbertese Tarawa Ieta, in the Republic of Kiribati, is the string of islets from Buariki at the northern tip of Tarawa atoll to Buota in the South, with a combined population of 6,629 as of 2015. It is administratively separate from neighbouring South Tarawa, and is governed by the Eutan Tarawa Council (ETC), based at Abaokoro.

Onotoa is an atoll and district of Kiribati. It is situated in the Gilbert Islands in the Pacific Ocean, 65 km (40 mi) from Tamana, the smallest island in the Gilberts. The population of Onotoa in the 2015 census was 1,393.

Onotoa Airport is the airport serving Onotoa.

Tabiteuea is an atoll in the Gilbert Islands, Kiribati, farther south of Tarawa. This atoll is the bigger and the most populated of the Gilbert Islands but Tarawa. The atoll consists of one main island, Aanikai in the north, and several smaller islets in between along the eastern rim of the atoll. The atoll has a total land area of 38 km2 (15 sq mi), while the lagoon measures 365 km2 (141 sq mi). The population numbered 5,261 in 2015. The islanders have customary fishing practices related to the lagoon and the open ocean.

Tabiteuea North Airport is the airport serving the northern part of Tabiteuea.

Tamana Airport is the airport serving Tamana, Kiribati.

Tamana is the smallest island in the Gilbert Islands. It is accessible both by boat and by air with Air Kiribati and Coral Sun Airways. 1,104 people live in Tamana.

Tarawa is an atoll and the capital of the Republic of Kiribati, in the central Pacific Ocean. It comprises North Tarawa, which has 6,629 inhabitants and much in common with other more remote islands of the Gilberts group, and South Tarawa, which has 56,388 inhabitants as of 2015, half of the country's total population. The atoll was the site of the Battle of Tarawa during World War II.