Riau is a province of Indonesia. It is located on the central eastern coast of the island of Sumatra, and extends from the eastern slopes of the Barisan Mountains to the Malacca Strait. The province shares land borders with North Sumatra to the northwest, West Sumatra to the west, and Jambi to the south, and a maritime border with the Riau Islands and the country of Malaysia to the east. It is the second-largest province in the island of Sumatra after South Sumatra, and is slightly larger than the nation of Jordan. According to the 2020 census, Riau had a population of 6,394,087 across a land area of 89,935.90 km²; the official estimate of population as of mid-2023 was 6,642,874. The province comprises ten regencies and two cities, with Pekanbaru serving as the capital and largest city.
The Riau Islands is a province of Indonesia—not to be confused with neighbouring Riau Province from which the islands were separated in 2002. The capital of the province is Tanjung Pinang and the largest city is Batam. It shares a maritime border with Riau and Jambi to the east, Bangka Belitung Islands to the south, Singapore to the northeast, Malaysia and West Kalimantan to the west, and Vietnam and Cambodia to the north. It comprises a total of 1,796 islands scattered between Sumatra, Malay Peninsula, and Borneo including the Riau Archipelago. Situated on one of the world's busiest shipping lanes along the Malacca Strait and the Natuna Sea, the province shares water borders with neighboring countries such as Singapore, Malaysia, and Brunei. The Riau Islands also have relatively large potential mineral resources and energy, as well as marine resources.
Natuna Regency is an islands regency located in the northernmost part of the Province of Riau Islands, Indonesia. It contains at least 154 islands, of which 127 of them are reported as uninhabited. This archipelago, with a land area of 1,978.31 km2 out of a total area of 264,198.37 km2 area, contains 15 districts, including the island district of Pulau Laut, Bunguran/Greater Natuna Island, the island district of Pulau Tiga, the island district of Midai, the island district of Subi, and the island district of Serasan.
Pekanbaru is the capital city of the Indonesian province of Riau, and a major economic centre on the eastern side of Sumatra Island with its name derived from the Malay words for 'new market' . It has an area of 632.26 km2 (244.12 sq mi), with a population of 897,767 at the 2010 Census, and 983,356 at the 2020 Census; the official estimate as at mid 2022 was 1,007,540. It is located on the banks of the Siak River, which flows into the Strait of Malacca, Pekanbaru has direct access to the busy strait and has long been known as a trading port.
Zapin is one of the most popular dance and musical forms in traditional Malay performing arts. Dance movements are choreographed to melodies, which are performed using musical instruments such as the gambus, accordion, and rebana. It is believed to have been introduced by Persian and Arab Muslim missionaries from the Middle East to the Malay Archipelago around the fourteenth century, where back then only males were allowed to perform; nowadays, female dancers are included. It used to be performed exclusively for religious ceremonies but through the years it has become a form of traditional entertainment, hence the participation of female dancers is allowed.
The Johor Sultanate was founded by Sultan of Malacca Mahmud Shah's son, Alauddin Riayat Shah II in 1528.
Bengkalis Regency is a regency of Indonesia in Riau Province. The regency was originally established in 1956 and then included most of the northern part of the province, but on 4 October 1999 it was divided up, with most of the territory being split off to form the new Rokan Hilir Regency, Siak Regency and the city of Dumai. On 19 December 2008 a further five districts were removed to create the new Meranti Islands Regency, leaving eight districts in the Bengkalis Regency. These eight districts has increased since 2010 to eleven by the splitting of existing districts on the Sumatran mainland.
Siak, is a regency (kabupaten) of Riau Province, on the island of Sumatra, Indonesia. It has an area of 8,556.09 km2 and had a population of 376,742 at the 2010 Census and 457,940 at the 2020 Census; the official estimate as at mid 2022 was 477,550, comprising 246,186 males and 231,364 females. The administrative centre of the regency is located at Siak Sri Indrapura. The northern part of this regency contains a large part of the Bukit Batu Biosphere Reserve.
Telephone numbers in Indonesia have different systems for land lines and mobile phones: land lines use area codes, while mobile phones do not.
Rangsang is an island of the Meranti Islands Regency of Riau Province in the Strait of Malacca, Sumatra, Indonesia. Administratively, it consists of the three districts (kecamatan) of Rangsang, Rangsang Pesisir and Rangsang Barat. The island had a population of 51,452 at the 2010 Census and 58,464 at the 2020 Census; the official estimate as at mid 2022 was 60,300. It is just north of Tebing Tinggi Island, about 24 kilometres (15 mi) south-west of Great Karimun island and 22 kilometres (14 mi) west of Kundur Island.
Tebing Tinggi Island is an island off the north east coast of Riau Province, Sumatra, Indonesia, located in the Strait of Malacca. It is located in the Meranti Islands Regency, and is directly east of Padang Island and directly south of Rangsang Island. The area is 1,379.31 km2.
The Sultanate of Deli was a 1,820 km² Malay state in east Sumatra founded in 1630. A tributary kingdom from 1630 it was controlled by various Sultanates until 1814, when it became an independent sultanate and broke away from the Sultanate of Siak.
The Karimun Regency is located in the Riau Islands Province, Indonesia. Besides the central island of Great Karimun, the regency also includes the islands of Kundur and over 240 smaller islands. The district covers a land area of 1,524 km2 and a sea area of 6,460 km2, and its population was 212,561 at the 2010 census and 253,457 at the 2020 census; the official estimate as at mid 2022 was 266,177.
The Sultanate of Siak Sri Indrapura, often called Sultanate of Siak, was a kingdom that was located in present-day Siak Regency, and nearby other regions from 1722 to 1949. It was founded by Raja Kecil, who had close relations with the Johor Sultanate, after he failed to seize the Johor throne. The polity expanded in the 18th century to encompass much of eastern Sumatra as it brought various communities under its control through warfare and control of trade between the interior of Sumatra and the Malacca Strait. The Dutch colonial state signed a series of treaties with the Siak rulers in the 19th century, which reduced the area of state influence to the Siak River. For the remainder of the Dutch colonial era, it operated as an independent state with Dutch advisors. After Indonesia's Independence was proclaimed on 17 August 1945, the last sultan of Siak, Sultan Syarif Kasim II, declared his kingdom to join the Republic of Indonesia.
The Kampar River is on the island of Sumatra in Indonesia, about 800 km northwest of the capital Jakarta. It is a well-known river surfing destination because of its tidal bore, known as Bono.
Meranti Islands is an archipelago, most of which forms a regency (kabupaten) of Riau Province and lies off the eastern coast of the island of Sumatra, Indonesia. It was created on 19 December 2008 by the separating of these large islands from the mainly mainland regency of Bengkalis. The regency comprises the islands of Tebing Tinggi, Rangsang, Padang, and Merbau, together with minor offshore islands, but does not include Bengkalis Island to the north, which is geographically part of the archipelago but remains within Bengkalis Regency. The principal town is Selat Panjang on Tebing Tinggi Island. The regency covers an area of 3,623.93 km2 and had a population of 176,290 at the 2010 Census and 206,116 at the 2020 Census; the official estimate as of mid-2023 was 211,771.
Riau-Lingga Sultanate, also known as the Lingga-Riau Sultanate, Riau Sultanate or Lingga Sultanate was a Malay sultanate that existed from 1824 to 1911, before being dissolved following Dutch intervention.
Hoo Ann Kiong Temple is the oldest Chinese Taoism temple in Selat Panjang. This temple is the oldest in Riau province and on Jalan Ahmad Yani, Selat Panjang, Riau. It is one of the cultural heritage assets of the Meranti Islands Regency.
Daphniphyllum griffithianum is a tree species in the family Daphniphyllaceae. It is native to an area from Nusa Tenggara, Indonesia to Thailand.
Indonesia 
Riau 
