Central Kalimantan (Indonesian: Kalimantan Tengah) is a province of Indonesia. It is one of five provinces in Kalimantan, the Indonesian part of Borneo. It is bordered by West Kalimantan to the west, South Kalimantan and East Kalimantan to the east, Java Sea to the south and is separated narrowly from North Kalimantan and Malaysia by East Kalimantan's Mahakam Ulu Regency. Its provincial capital is Palangka Raya and in 2010 its population was over 2.2 million, while the 2020 Census showed a total of almost 2.67 million; the official estimate as at mid 2023 was 2,774,747 (comprising 1,434,119 males and 1,339,628 females), and was projected to rise to 2,809,700 at mid 2024.

The population growth rate was almost 3.0% per annum between 1990 and 2000, one of the highest provincial growth rates in Indonesia during that time; in the subsequent decade to 2010 the average annual growth rate slowed markedly to around 1.8%, but it rose again in the decade beginning 2010. More than is the case in other province in the region, Central Kalimantan is populated by the Dayaks, the indigenous inhabitants of Borneo.

Since the eighteenth century the central region of Kalimantan and its Dayak inhabitants were ruled by the Muslim Sultanate of Banjar. Following Indonesian independence after World War II, Dayak tribes demanded a province separate from South Kalimantan province.

In 1957 South Kalimantan was divided to provide the Dayak population with greater autonomy from the Muslim population in the province. The change was approved by the Indonesian Government on 23 May 1957 under Presidential Law No. 10 Year 1957, which declared Central Kalimantan the seventeenth province of Indonesia. President Sukarno appointed the Dayak-born national hero Tjilik Riwut as the first Governor and Palangkaraya the provincial capital.

Central Kalimantan is the largest Indonesian province by area (Papua held this position until the 2022 partition) with a size of 153,443.91 km (59,245.02 sq mi), about 1.5 times the size of the island of Java and it is slightly larger than Bangladesh or the U.S. state of Illinois. It is bordered by West Kalimantan and East Kalimantan provinces to the north, by the Java Sea to the south, by South Kalimantan and East Kalimantan provinces to the east, and by West Kalimantan province to west.

The Schwaner Mountains stretch from the north-east of the province to the south-west, 80% of which is covered in dense forest, peatland swamps, mangroves, rivers and traditional agriculture land. Highland areas in the north-east are remote and not easily accessible. Non-volcanic mounts are scattered in this area including Kengkabang, Samiajang, Liang Pahang and Ulu Gedang.

The centre of the province is covered with tropical forest, which produces rattan, resin and valuable timber such as Ulin and Meranti. The southern lowlands are dominated by peatland swamps that intersect with many rivers. Sabangau National Park is a protected peatland area internationally acknowledged as sanctuary for the endangered Orangutan. Recently the peat swamp forests have been damaged by the Mega Rice Project, which unsuccessfully sought to turn large areas into rice paddies.

The province's climate is wet weather equatorial zone with an eight-month rainy season, and 4 months of dry season. Rainfall or precipitation is 2,776—3,393 mm per year with an average of 145 rainy days annually.

Central Kalimantan has numerous rivers from the catchment areas to the north in the Schwaner Mountains, flowing to the Java Sea. The major rivers include:

• Barito River (900 km)
• Kapuas River (600 km)
• Kahayan River (600 km)
• Katingan River (600 km)
• Mentaya (Sampit) River (400 km)
• Seruyan River (350 km)
• Lamandau River (300 km)
• Arut River (250 km)
• Sabangau River (200 km)
• Kumai River (179 km)
• Jelai River (100 km)

Rivers are an important mode of transportation and a primary location for settlement. With relatively undeveloped infrastructure, the province's economy relies heavily on the rivers.

Based upon the research of the Indonesian Ministry of Environment and Forestry, Central Kalimantan has approximately 10 different ecological regions and is dominated by two main ecological regions. Those two are peat ecological region which covered 26% of the total area of Central Kalimantan and the fluvial plain ecoregion which covered 21% of the whole area of Central Kalimantan. Due to its high concentration of peat ecological region, Central Kalimantan is prone to drought and peat fires during the dry season and inundation during the rainy season within each episodes of the ENSO and the IOD. These situations worsen because of massive deforestation in the region and climate change.

Central Kalimantan is also home for many endemic floras and faunas like orangutans, proboscis monkeys, hornbill birds, rattan, Bornean iron wood, etc. This province currently has three national parks i.e. Sabangau National Park, Tanjung Puting National Park, and Bukit Baka Bukit Raya National Park which are home to the endemic floras and faunas of Kalimantan.

Central Kalimantan Province, when separated from South Kalimantan in 1958, comprised three regencies (kabupaten) - Barito, Kapuas and Kotawaringin. However on 26 June 1959 two of these were split - Barito Regency was divided into a South Barito Regency and a North Barito Regency, while Kotawaringin Regency was divided into a West Kotawaringin Regency and an East Kotawaringin Regency. On 14 June 1965 the provincial capital of Palangka Raya was split off from Kapuas Regency to form an independent city (kotamadya).

On 10 April 2002 an additional eight regencies were created by splitting existing regencies - Sukamara and Lamandau from parts of West Kotawaringin Regency, Seruyan and Katingan from parts of East Kotawaringin Regency, Pulang Pisau and Gunung Mas from parts of Kapuas Regency, East Barito from part of South Barito Regency, and Murung Raya from part of North Barito Regency. Thus the province now is administratively divided into thirteen regencies (each headed by a regent) and the single city. These are listed below with their areas and their populations at the 2010 and 2020 Censuses, together with the official estimates as at mid 2023.

Kode Wilayah	Name of City or Regency	Area in km	Pop'n 2000 Census	Pop'n 2010 Census	Pop'n 2020 Census	Pop'n mid 2023 Estimate	Capital	HDI 2022	Location Map
62.01	West Kotawaringin Regency (Kotawaringin Barat)	9,480.3	168,472	235,803	270,388	279,740	Pangkalan Bun	0.734 (High)
62.02	East Kotawaringin Regency (Kotawaringin Timur)	15,543.8	308,765	374,175	428,895	443,359	Sampit	0.717 (High)
62.03	Kapuas Regency	17,033.6	325,243	329,646	410,446	425,186	Kuala Kapuas	0.700 (High)
62.04	South Barito Regency (Barito Selatan)	6,267.1	108,560	124,128	131,140	134,698	Buntok	0.710 (High)
62.05	North Barito Regency (Barito Utara)	10,152.25	109,273	121,573	154,812	160,605	Muara Teweh	0.712 (High)
62.08	Sukamara Regency	3,311.2	29,561	44,952	63,464	66,633	Sukamara	0.689 (Medium)
62.09	Lamandau Regency	7,673.56	47,969	63,199	97,611	102,103	Nanga Bulik	0.711 (High)
62.07	Seruyan Regency	15,215.2	92,037	139,931	162,906	171,304	Kuala Pembuang	0.682 (Medium)
62.06	Katingan Regency	20,382.53	121,047	146,439	162,222	169,355	Kasongan	0.697 (Medium)
62.11	Pulang Pisau Regency	9,650.86	111,488	120,062	134,499	138,199	Pulang Pisau	0.690 (Medium)
62.10	Gunung Mas Regency	9,305.8	74,823	96,990	135,373	142,835	Kuala Kurun	0.714 (High)
62.13	East Barito Regency (Barito Timur)	3,212.5	71,907	97,372	113,229	117,312	Tamiang Layang	0.721 (High)
62.10	Murung Raya Regency	23,575.3	74,050	96,857	111,527	116,621	Purukcahu	0.686 (Medium)
62.71	Palangkaraya City	2,848.7	158,770	220,962	293,457	305,797	Palangkaraya	0.812 (Very High)
	Totals	153,443.91	1,801,965	2,212,089	2,669,969	2,773,747	Palangka Raya	0.716 (High)

In addition to the civil service, Central Kalimantan also recognises a traditional governing system led by traditional leaders known as Damang. The province is divided into 67 traditional law areas known as Kedamangan, headed by Damang. The system is intended to culturally recognise and preserve the customs and heritage of the Dayak tribes.

The province now forms one of Indonesia's 84 national electoral districts to elect members to the People's Representative Council. The Central Kalimantan Electoral District consists of all of the 13 regencies in the province, together with the city of Palangkaraya, and elects 6 members to the People's Representative Council.

This section needs to be updated. Please help update this article to reflect recent events or newly available information. (February 2021)

A Russian company had been contracted to build railroads from Central Kalimantan to East Kalimantan for coal transportation, with an estimated cost of US$2.4 billion, that was expected to start in 2013 and be completed by 2017.

Historical population

Year	Pop.	±%
1971	701,936	—
1980	954,353	+36.0%
1990	1,396,486	+46.3%
1995	1,627,453	+16.5%
2000	1,857,000	+14.1%
2005	1,914,900	+3.1%
2010	2,207,367	+15.3%
2015	2,490,178	+12.8%
2020	2,669,969	+7.2%
2023	2,773,747	+3.9%
Source: Badan Pusat Statistik 2024

The total population of Central Kalimantan was 2,669,969 people based upon the national census in 2020; the official estimate as at mid 2023 was 2,773,747. The sex ratio of this province is 107 which means there are 107 males to every 100 females. The population density of Central Kalimantan is only 18 people/km.

According to the Statistics on 2021, the largest religious group in Central Kalimantan province is Islam with more than 74% of its total population. Then, the second largest group is Christianity with more than 19% of its total population. The rest of the population adhere to the local belief of Kaharingan, Hinduism, and Buddhism with more than 5%.

• Religious Buildings in Central Kalimantan
• 
  Darussalam Grand Mosque in Palangka Raya
• 
  Balai Basarah Induk Intan in Muara Teweh (Kaharingan temple)
• 
  Kalimantan Evangelical Church in East Barito
• 
  Buddhist temple with Chinese architecture in Palangka Raya

Central Kalimantan is predominantly inhabited by the Dayak people that would further be divided into three major Dayak sub-ethnics. The three major Dayak tribes in Central Kalimantan are the Ngaju, Ot Danum and Dusun Ma'anyan Ot Siang. The three major tribes extended into several branches of prominent Dayak tribes in Central Kalimantan such as Lawangan, Taboyan, Dusun Siang, Boyan, Bantian, Dohoi and Kadori.

In addition to the indigenous Dayak tribes, there are also ethnic groups from other areas of Indonesia, including Malays, Javanese, Madurese, Batak, Toraja, Ambonese, Bugis, Palembang, Minang, Banjarese, Makassar, Papuan, Balinese, Acehnese and also Chinese.

Ethnic groups and religion as per 2000 census

Ethnic group	Islam	Christian	Hindu	Other	% of population
Banjarese	100%	0%	0%	0%	24.6%
Javanese	96%	4%	0%	0%	18.8%
Ngaju Dayak	43%	44%	13%	0%	18.0%
Sampit Dayak	82%	9%	9%	0%	9.6%
Bakumpai	99%	0%	0%	0%	7.5%
Madurese	100%	0%	0%	0%	3.5%
Katingan Dayak	37%	22%	32%	9%	3.3%
Maanyan	4%	86%	9%	1%	2.8%
Tomun Dayak	18%	56%	17%	2%	2.2%
Sundanese	99%	1%	0%	0%	1.4%
Dusun Dayak	9%	29%	63%	0%	1.1%
Siang Dayak	6%	40%	48%	4%	0.9%
Manyan Dayak	20%	70%	10%	0%	0.7%
Ot Danum	10%	51%	38%	0%	0.6%
Other non-Dayak	NA	NA	NA	NA	1.3%
Other Dayak	NA	NA	NA	NA	5.0%

The most well-known traditional musical instrument from Central Kalimantan is Japen, Garantung, and Gandang Manca which are traditional Dayak musical instruments. These musical instruments are usually played during traditional procession or ritual.

Japen or Kecapi is a lute-like instrument that is honored by Dayak people. This traditional musical instrument is usually played as an accompaniment for Central Kalimantan traditional music such as Karungut recitation, a Dayak oral literature in the form of musicalized rhyme scheme. Japen is mainly made of wood and nylon rope for its strings.

Garantung is a percussion instrument that is fairly similar with kempul in gamelan. It is a type of hanging gong that is normally played ensembly with Gandang Manca or Gandang Kembar. Gandang Manca itself is a two-headed drum of Dayak traditional musical instrument that is mainly made of wood for the body of the drum and leather membranes to cover the cavity at both ends that are tied by rattan rope. Both Garantung and Gandang Manca are commonly played ensembly as an accompaniment for Dayak traditional processions and rituals.

The most notable fine arts of Dayak people is the traditional house. The traditional house of Dayak people in Central Kalimantan is commonly called Huma Betang. Huma Betang or simply called Betang like many other traditional houses in Indonesia is built on stilts. This traditional house structure is mainly made of iron wood which is commonly anti-termite and resistant to high humidity, thus the house can stand up to hundreds of years. Huma Betang is very well-known for its huge and long size. The length of this house structure is usually between 30 and 150 metres, the width is somewhere between 5 and 30 metres, and the height is approximately 3 to 6 metres. Due to its huge and long size, this house can be occupied by up to 150 people and usually inhabited by one big family.

• Huma Betang Structures
• 
  A Huma Betang in Sei Pasah Village, Kapuas Regency, Central Kalimantan
• 
  A Huma Betang in Lewu Hante Museum, East Barito, Central Kalimantan
• 
  A Huma Betang with Sapundu sculpture at the front of the house in West Kotawaringin, Central Kalimantan

Central Kalimantan is well-known for its unique traditional carving. The three most famous carving from this province are the three dimensional wood carving sculpture of Sapundu and the traditional weapons i.e. Mandau and Talawang.

Sapundu sculpture is a three dimensional wood carving in the form of humanoid statue. This sculpture is commonly adorned with decorative motifs or even colors. Sapundu sculpture is mainly made of Bornean iron wood and usually presents during Tiwah procession. In ancient times, Sapundu sculpture symbolized the social status of its owner and was believed to possess magical powers.

The Mandau and Talawang are the main traditional weapon of Dayak people in Central Kalimantan. The Mandau is a type of sword with a single edge blade i.e. one side is convex and the other side is concave. The Mandau consists of three different parts, which are (i) the Bilah or the blade that made of Mantikei iron plate with a sharp edge and is 70 cm long, (ii) the Pulang Gagang or the hilt that is usually made of wood, deer's horns, or even human bones, and (iii) the Sarung or the sheath which covers the blade and is typically made of wood and usually covered with bracelet-shaped bone on the upper part and wrapped by rattan rope.

The Talawang is a shield that mainly made of Bornean iron wood that is carved with certain motifs and adorned with some bright colors. In ancient times, this weapon was used as a protection against wild animals and enemy's arrows and sword slashes. However, the function currently shifts to become a decorative ornament of Kaharingan temples, public buildings, or even people's houses mostly in Central Kalimantan.

Central Kalimantan is home for various sub-ethnics of Dayak tribe. Each of those Dayak sub-ethnics live spread out across all regencies in Central Kalimantan. This makes every regency have their own unique traditional dances. These are some of the traditional dances from Central Kalimantan:

1. Kinyah Mandau Hatue Dance, originating from Kapuas Regency and depicting theatrical war and martial arts of Dayak tribes in ancient time.
2. Giring-Giring Dance, coming from East Barito Regency and usually performed in group of 6 to 10 people.
3. Walian Dadas Dance, originating from South Barito Regency and used to be performed as a way to heal a region from negativity.
4. Babukung Dance, originally from Lamandau Regency and performed during funeral especially among Dayak Tomun people.
5. Tambun Bungai Dance, originating from Palangka Raya city and depicting heroic action of Tambung and Bungai protecting the territory from enemy who tried to loot people's crops.

• Deforestation in Borneo
• Fauna of Borneo
• Heart of Borneo

• Official website (in Indonesian)
• Official statistics for the province provided by Statistics Indonesia may be accessed (in Indonesian) at BPS-Statistics of Kalimantan Tengah Province.