Timor (, , ) is an
island
An island or isle is a piece of land, distinct from a continent, completely surrounded by water. There are continental islands, which were formed by being split from a continent by plate tectonics, and oceanic islands, which have never been ...
at the southern end of
Maritime Southeast Asia
Maritime Southeast Asia comprises the Southeast Asian countries of Brunei, Indonesia, Malaysia, the Philippines, Singapore, and East Timor.
The terms Island Southeast Asia and Insular Southeast Asia are sometimes given the same meaning as ...
, in the north of the
Timor Sea. The island is
divided between the
sovereign state
A sovereign state is a State (polity), state that has the highest authority over a territory. It is commonly understood that Sovereignty#Sovereignty and independence, a sovereign state is independent. When referring to a specific polity, the ter ...
s of
Timor-Leste in the eastern part and
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
in the western part. The Indonesian part, known as
West Timor, constitutes part of the
province of
East Nusa Tenggara. Within West Timor lies an
exclave of Timor-Leste called
Oecusse District. The island covers an area of . The name is a variant of ''timur'',
Malay for "east"; it is so called because it lies at the eastern end of the
Lesser Sunda Islands
The Lesser Sunda Islands (, , ), now known as Nusa Tenggara Islands (, or "Southeast Islands"), are an archipelago in the Indonesian archipelago. Most of the Lesser Sunda Islands are located within the Wallacea region, except for the Bali pro ...
. Mainland
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
is less than 500 km away, separated by the Timor Sea.
Language, ethnic groups and religion

Anthropologists identify eleven distinct
ethno-linguistic groups in Timor. The largest are the
Atoni of western Timor and the
Tetum of central and eastern Timor.
Most indigenous Timorese languages belong to the
Timor–Babar branch of the
Austronesian languages spoken throughout the Indonesian archipelago. Although lexical evidence is lacking,
the
non-Austronesian languages of Timor are thought to be related to languages spoken on
Halmahera and in
Western New Guinea.
Some are so mixed that it is difficult to tell which family they descend from.
The official languages of Timor-Leste are
Tetum and
Portuguese, while in West Timor it is
Indonesian, although Uab Meto (also known as Dawan language) is the local Atoni language spoken throughout
Kupang
Kupang (, ), formerly known as Koepang, is the capital of the Indonesian province of East Nusa Tenggara. At the 2020 Indonesian census, 2020 Census, it had a population of 442,758;Badan Pusat Statistik, Jakarta, 2021. the official estimate as o ...
,
South Central Timur and
North Central Timur Regencies. Indonesian, a standardized dialect of Malay, is also widely spoken and understood in Timor-Leste.
Christianity
Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...
is the dominant religion throughout the island of Timor, at about 90% of the population. However, it is unequally distributed as West Timor is 58% Protestant and 37% Catholic, and Timor-Leste is 98% Catholic and 1% Protestant.
Islam
Islam is an Abrahamic religions, Abrahamic monotheistic religion based on the Quran, and the teachings of Muhammad. Adherents of Islam are called Muslims, who are estimated to number Islam by country, 2 billion worldwide and are the world ...
and
animism make up most of the remainder at about 5% each across the island.
Geography
Timor is located north of
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
and
Oceania
Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...
, and is one of the easternmost
Sunda Islands and the easternmost of
Lesser Sunda Islands
The Lesser Sunda Islands (, , ), now known as Nusa Tenggara Islands (, or "Southeast Islands"), are an archipelago in the Indonesian archipelago. Most of the Lesser Sunda Islands are located within the Wallacea region, except for the Bali pro ...
. Together with
Sumba,
Babar and associated smaller islands, Timor forms the southern outer
archipelago
An archipelago ( ), sometimes called an island group or island chain, is a chain, cluster, or collection of islands. An archipelago may be in an ocean, a sea, or a smaller body of water. Example archipelagos include the Aegean Islands (the o ...
of the
Lesser Sunda Islands
The Lesser Sunda Islands (, , ), now known as Nusa Tenggara Islands (, or "Southeast Islands"), are an archipelago in the Indonesian archipelago. Most of the Lesser Sunda Islands are located within the Wallacea region, except for the Bali pro ...
with the inner islands of
Flores,
Alor and
Wetar to the north, and beyond them
Sulawesi
Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...
.
Timor is the principal island of the
Outer Banda Arc, which is being uplifted by arc-continent collision with the
Australian continent. Timor consists mostly of rocks from the Australian continental margin that are accreted to the Banda Arc. It occupies a forearc position in front of the active volcanic arc that forms the islands in the Flores region to the north. The orientation of the main axis of the island also differs from its neighbors. These features have been explained as the result of being on the northern edge of the
Indo-Australian Plate as it meets the
Eurasian Plate and pushes into
Southeast Asia
Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
. The climate includes a long dry season (April-November) with hot winds blowing over from Australia. Rivers on the island include the
North
North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography.
Etymology
T ...
and
South Laclo Rivers in Timor-Leste. The mountains, which reach up to nearly 3000m elevation are one of the most mature parts of the Banda Range, which stretches from Sumba to Seram. Mutis is the highest mountain in West Timor and Ramelau is the highest mountain in Timor Leste.
The largest towns on the island are the provincial capital of
Kupang
Kupang (, ), formerly known as Koepang, is the capital of the Indonesian province of East Nusa Tenggara. At the 2020 Indonesian census, 2020 Census, it had a population of 442,758;Badan Pusat Statistik, Jakarta, 2021. the official estimate as o ...
in West Timor, Indonesia and the Portuguese colonial towns of
Dili the capital, and
Baucau in Timor-Leste. Poor roads make transport to inland areas difficult, especially in Timor-Leste. Sources of revenue include gas and oil in the Timor Sea, coffee growing and tourism.
Geology
Timor is an aerially exposed portion of the
Banda Forearc formed by collision of
Eurasian oceanic
crust and continental crust of the
Australian plate. This is a unique convergent margin where a thick continental margin is forced under thinner oceanic crust. The result is a large
accretionary wedge of imbricated
thrust sheets composed of
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
and
Tertiary distal material of the Australian continental margin thrust on top of Australian
continental shelf deposits. Timor is well known for its structural complexity. Debate continues about the nature of deformation of continental crust. Some researchers advocate shallow thin-skinned deformation, while others favor shallow thin-skinned with some basement deformation.
Timor also has potential for significant
petroleum
Petroleum, also known as crude oil or simply oil, is a naturally occurring, yellowish-black liquid chemical mixture found in geological formations, consisting mainly of hydrocarbons. The term ''petroleum'' refers both to naturally occurring un ...
development. Onshore and offshore exploration efforts have been attempted with varying success. Timor host dozens of natural
oil and gas seeps with most exploration concentrated on the north end of the Island where oil seeps are prevalent. Carbon rich shales from the island have been found with TOC up to 23%. Such shales buried deep in the subsurface could act as high-quality
source rocks.
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...
marine shoreface and
turbidite
A turbidite is the geologic Deposition (geology), deposit of a turbidity current, which is a type of amalgamation of fluidal and sediment gravity flow responsible for distributing vast amounts of clastic sediment into the deep ocean.
Sequencing
...
sands of the Plover and Militia Formations are proven
reservoirs in the North Australian Shelf. Over pressured Upper Jurassic silt and mudstones shales may also provide adequate seals for hydrocarbons. Research focusing on the structure of deformed basement rocks provides insight into possible onshore and offshore structural and stratigraphic traps for future petroleum development.
Demographics
10 largest cities and towns in Timor by population

*
*
Administration
2018 and 2023
2023
West Timor
West Timor is part of the
East Nusa Tenggara province. It was formerly split into the City of Kupang (a ''
kabupaten'' or regency-level administrative area) and four
regencies (kabupaten); from west to east these are:
Kupang
Kupang (, ), formerly known as Koepang, is the capital of the Indonesian province of East Nusa Tenggara. At the 2020 Indonesian census, 2020 Census, it had a population of 442,758;Badan Pusat Statistik, Jakarta, 2021. the official estimate as o ...
,
Timor Tengah Selatan (South Central Timor),
Timor Tengah Utara (North Central Timor) and
Belu. However, a fifth regency –
Malaka – was in 2012 formed from the southern half of Belu Regency. Note that the administrative area has shrunk as
Rote Ndao Regency (Rote and Ndoa islands to the southwest) and
Sabu Raijua Regency (the Savu Islands further west) were split off in 2002 and 2009 respectively from Kupang Regency. The island accounts for 35.5% of the provincial population.
Timor-Leste
Timor-Leste is divided into thirteen municipalities, which in turn are subdivided into 65 administrative posts, 442 ''sucos'' (villages), and 2,225 ''aldeias'' (hamlets).
Flora and fauna
Timor and its offshore islands such as
Atauro, a former place of exile increasingly known for its beaches and coral, as well as
Jaco along with Wetar and the other
Barat Daya Islands to the northeast constitute the
Timor and Wetar deciduous forests ecoregion. The natural vegetation was
tropical dry broadleaf forests with an undergrowth of shrubs and grasses supporting a rich wildlife. However much of the original forest has been cleared for farming, especially on the coasts of Timor and on the smaller islands like Atauro. Apart from one large block in the centre of Timor only patches remain. This ecoregion is part of the
Wallacea area with a mixture of plants and animals of
Asia
Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...
n and
Australasian origin; it lies in the western part of Wallacea, in which Asian species predominate.
Many trees are
deciduous
In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...
or partly deciduous, dropping their leaves during the dry season, there are also
evergreen and thorn trees in the woodland. Typical trees of the lowland slopes include ''
Sterculia foetida'', ''
Calophyllum teysmannii'' and ''
Aleurites moluccanus''.
During the
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...
epoch, Timor was the abode of extinct
giant
In folklore, giants (from Ancient Greek: ''wiktionary:gigas, gigas'', cognate wiktionary:giga-, giga-) are beings of humanoid appearance, but are at times prodigious in size and strength or bear an otherwise notable appearance. The word ''gia ...
monitor lizards similar to the
Komodo dragon. Like
Flores,
Sumba and
Sulawesi
Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...
, Timor was also once a habitat of extinct
dwarf stegodonts, relatives of
elephant
Elephants are the largest living land animals. Three living species are currently recognised: the African bush elephant ('' Loxodonta africana''), the African forest elephant (''L. cyclotis''), and the Asian elephant ('' Elephas maximus ...
s.
Fauna of today includes a number of endemic species such as the distinctive
Timor shrew and
Timor rat. The
northern common cuscus, a
marsupial of Australasian origin occurs as well, but is thought to be introduced. The island have a great number of birds, mainly of Asian origin with some of Australasian origin. There is a total of 250 species of which twenty four are endemic, due to the relative isolation of Timor, including five threatened species; the
slaty cuckoo-dove,
Wetar ground dove,
Timor green pigeon,
Timor imperial pigeon, and
iris lorikeet.
Saltwater crocodiles are found in the wetlands whereas
reticulated python
The reticulated python (''Malayopython reticulatus'') is a Pythonidae, python species native to South Asia, South and Southeast Asia. It is the world's List of largest snakes, longest snake, and the list of largest snakes, third heaviest snake. I ...
s can be found in forests and grasslands of Timor. However, the population sizes and status are unknown.
Frog species in Timor include ''
Duttaphrynus melanostictus'', ''
Hoplobatrachus tigerinus'', ''
Limnonectes timorensis'', ''
Litoria everetti'', and ''
Polypedates leucomystax''. A new species of
microlyhid frog belonging to the genus ''
Kaloula'' has also recently been discovered in Timor.
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...
fossils of marine vertebrates are known from Timor-Leste deposits. These include
mosasaurs such as ''
Globidens timorensis'',
lamniforme sharks,
coelacanths and the
choristodere ''
Champsosaurus''.
History

The earliest historical record about Timor island is the 13th-century Chinese ''
Zhu Fan Zhi'', where it is called ''Ti-wu'' and is noted for its sandalwood. Later on, in the 14th-century Javanese
Nagarakretagama, Canto 14, ''Timur'' is identified as an island within
Majapahit's realm. Timor was incorporated into ancient
Java
Java is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea (a part of Pacific Ocean) to the north. With a population of 156.9 million people (including Madura) in mid 2024, proje ...
nese, Chinese and Indian trading networks of the 14th century as an exporter of aromatic
sandalwood
Sandalwood is a class of woods from trees in the genus ''Santalum''. The woods are heavy, yellow, and fine-grained, and, unlike many other aromatic woods, they retain their fragrance for decades. Sandalwood oil is extracted from the woods. Sanda ...
,
slaves,
honey
Honey is a sweet and viscous substance made by several species of bees, the best-known of which are honey bees. Honey is made and stored to nourish bee colonies. Bees produce honey by gathering and then refining the sugary secretions of pl ...
and
wax, and was settled by both the
Portuguese, in the end of the 16th century, and the
Dutch, based in Kupang, in the mid-17th century.
As the nearest island with a European settlement at the time, Timor was the destination of
William Bligh and seamen loyal to him following the infamous
mutiny on the ''Bounty'' in 1789. It was also where survivors of the wrecked , sent to arrest the ''Bounty'' mutineers, landed in 1791 after that ship sank in the
Great Barrier Reef.
The island has been politically divided in two parts for centuries. The Dutch and Portuguese fought for control of the island until it was divided by
treaty in 1859, but they still did not formally resolve the matter of the boundary until 1912.
West Timor, was known as
Dutch Timor until 1949 when it became
Indonesian Timor, a part of the nation of
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...
which was formed from the old
Netherlands East Indies; while
East Timor was known as
Portuguese Timor, a Portuguese colony until 1975. It includes the
exclave of
Oecussi-Ambeno in West Timor.
Although Portugal was neutral during
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, in December 1941, Portuguese Timor was occupied by
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
n and Dutch forces, which were expecting a
Japanese invasion. This Australian military intervention dragged Portuguese Timor into the Pacific War but it also slowed the Japanese expansion. When the Japanese did occupy Timor, in February 1942, a 400-strong Dutch-Australian force and large numbers of Timorese volunteers engaged them in
a one-year guerrilla campaign. After the allied evacuation in February 1943 the East Timorese continued fighting the Japanese, with comparatively little
collaboration with the enemy taking place. This assistance cost the civilian population dearly: Japanese forces burned many villages and seized food supplies. The Japanese occupation resulted in the deaths of 40,000–70,000 Timorese.
Following the
military coup in Portugal in 1974 the Portuguese began to withdraw from Timor. The
subsequent internal unrest and fear of the communist
Fretilin party led to an
invasion by Indonesia, who opposed the concept of an independent East Timor. In 1975, East Timor was annexed by Indonesia and became known as ''Timor Timur'' or 'Tim-Tim' for short. It was regarded by Indonesia as the country's 27th province, but this was never recognised by the
United Nations
The United Nations (UN) is the Earth, global intergovernmental organization established by the signing of the Charter of the United Nations, UN Charter on 26 June 1945 with the stated purpose of maintaining international peace and internationa ...
(UN) or
Portugal
Portugal, officially the Portuguese Republic, is a country on the Iberian Peninsula in Southwestern Europe. Featuring Cabo da Roca, the westernmost point in continental Europe, Portugal borders Spain to its north and east, with which it share ...
.
The people of East Timor, through
Falintil the military wing of Fretilin, resisted 35,000 Indonesian troops in a prolonged guerrilla campaign, but the whole island remained under Indonesian control until
a referendum held in 1999 under a UN-sponsored agreement between Indonesia and Portugal in which its people rejected the offer of autonomy within Indonesia. The UN then temporarily governed East Timor until it became independent as Timor-Leste in 2002 under the presidency of Falintil leader
Xanana Gusmão. Political strife continued, as the new nation coped with poverty. Nevertheless, the UN presence was much reduced.
A group of people on the Indonesian side of Timor have been reported active since 2001 trying to establish a
Great Timor state.
However, there is no real evidence that the people of West Timor, most of whom are ethnically
Atoni, the traditional enemy of the East Timorese, have any interest in such a union. Furthermore, the current government of Timor-Leste recognizes the existing boundary.
Time zone
UTC+8:
*
East Nusa Tenggara (West Timor)
UTC+9:
*
Timor-Leste (most of state)
See also
*
Battle of Timor
*
Indonesian occupation of East Timor
*
List of divided islands
*
List of rulers of Timor
References
External links
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*
*
{{Authority control
International islands
Lesser Sunda Islands
Outer Banda Arc
Portuguese colonialism in Indonesia
Wallacea
Islands of Timor-Leste
Islands of Indonesia
Populated places in Indonesia