Other transcription(s)
 •  Jawi رياو
 •  Chinese 廖内
Istana Kerajaan Siak (1).jpg Jembatan Tengku Agung Sultanah Latifah.jpg
An-Nur panorama.jpg
Tesso Nilo 2009.jpg Sejahtera Sakti Selatpanjang.jpg
Riau Main Stadium.JPG Muara Takus temple.jpg
From top, left to right: Siak Palace, Tengku Agung Sultanah Latifah bridge, An-Nur Mosque, Tesso Nilo National Park, Hoo Ann Kiong Temple in Selatpanjang, Riau Main Stadium a largest stadium in Riau and Muara Takus Temple
Official seal of Riau
Motto: Bumi Bertuah Negeri Beradat ( Malay)
(Ground of Fortunes, Land of Customs)
Location of Riau in Indonesia
Location of Riau in Indonesia
Coordinates: 0°32′N 101°27′E / 0°32′N 101°27′E / 0.533; 101.450
Country   Indonesia
Established August 10, 1957
Capital Pekanbaru coa.GIF Pekanbaru
 • Body Riau Regional Government
 • Governor Arsyadjuliandi Rachman ( Golkar)
 • Vice-governor Vacant
 • Total 87,023.66 km2 (33,600.02 sq mi)
Area rank 7th
Elevation 10 m (30 ft)
Highest elevation 1,091 m (3,579 ft)
Lowest elevation 0 m (0 ft)
Population (2015) [1]
 • Total 6,344,402
 • Rank 10th
 • Density 73/km2 (190/sq mi)
 • Density rank 24th
Demonym(s) Riauan
Warga Riau ( id)
Kaum Riau ( ms)
 • Ethnic groups Malay (33.28%), Javanese (29.20%), Batak (12.55%), Minangkabau (12.29%), Chinese (4.13%) [2]
 • Religion Islam (89.27%), Protestantism (7.87%), Buddhism (1.84%), Roman Catholicism (1.06%), Confucianism (0.08%), Hinduism (0.07%)
 • Languages Indonesian (official)
Malay, Minangkabau, Hokkien (regional)
Time zone Indonesia Western Time ( UTC+7)
Postcodes 28xxx, 29xxx
Area codes (62)6xx, (62)76x
ISO 3166 code ID-RI
Vehicle sign BM
GRP per capita US$ 9,252.17
GRP rank 3rd
HDI Increase 0.712 (High)
HDI rank 6th (2015)
Largest city by area Dumai - 1,623.38 square kilometres (626.79 sq mi)
Largest city by population Pekanbaru - (929,247 - 2015)
Largest regency by area Indragiri Hilir Regency - 11,605.97 square kilometres (4,481.09 sq mi)
Largest regency by population Kampar Regency - (711,236 - 2015)
Website Government official site

Riau ( Jawi: رياو‎, is a province of Indonesia. It is located in the central eastern coast of Sumatra along the Strait of Malacca. Until 2004 the province included the offshore Riau Islands, a large group of small islands (of which the principal islands are Batam and Bintan) located east of Sumatra Island and south of Singapore, before these islands were split off as Riau Islands Province in July 2004. The provincial capital of Riau Province and its largest city is Pekanbaru. Other major cities include Dumai, Selat Panjang, Bagansiapiapi, Bengkalis, Bangkinang, Rengat and Siak Sri Indrapura. The province shares land borders with North Sumatra to the northwest, West Sumatra to the west, and Jambi to the south.

The total area for Riau province is 87,023.66 km² , which stretches from the slopes of the Bukit Barisan to the Strait of Malacca. Riau has a wet tropical climate with average rainfall ranging between 2000-3000 millimeters per year, and the average rainfall per year is about 160 days.

Riau is currently one of the richest provinces in Indonesia and is rich in natural resources, particularly petroleum, natural gas, rubber, palm oil and fibre plantations. Extensive logging and plantation development in has led to a massive decline in forest cover Riau, and associated fires have contributed to haze across the larger region.

Since the 1970s, much of Indonesia has experienced a decline in population growth rates. Riau has been a significant exception, with increasing rates every decade since 1970 to a 4.35 percent annual rise for the 1990s; [3] however, this rate slowed significantly during the subsequent decade. The provincial population was 5,538,367 at the 2010 census. [4] and according to the estimate for January 2014 this had risen to 6,358,636.


Several theories exist for the origin of the word Riau province.

Three theories exist for the origin of Riau's name. One suggests that it is a mutation of the Portuguese name "Rio River", referring to a local river. A Portuguese military expedition explored the Siak river in 1514, searching for a kingdom believed to exist in the region, as well as pursuing followers of Sultan Mahmud Shah who tried to escape income taxes following the fall of the Malacca Sultanate.

A second theory suggests that Riau is a mutation of the local word riahi, meaning "sea air".

A third theory says that the province was named after a singer popular in local communities, who was described as rioh ("boisterous").

A fourth theory instead asserts that rioh was a description of locals by settlers from Johor led by Raja Kecik in 1719.

Other Languages
Acèh: Riau
العربية: رياو
تۆرکجه: ریائو
Bân-lâm-gú: Riau
беларуская: Рыау (правінцыя)
български: Риау
català: Riau
Cebuano: Provinsi Riau
čeština: Riau
dansk: Riau
Deutsch: Riau
español: Riau
Esperanto: Riauo
estremeñu: Riau
euskara: Riau
فارسی: ریائو
français: Riau
客家語/Hak-kâ-ngî: Riau
한국어: 리아우 주
हिन्दी: रियाउ
Bahasa Indonesia: Riau
italiano: Riau
Basa Jawa: Riau
Kapampangan: Riau
ქართული: რიაუ
لۊری شومالی: ریائو
lietuvių: Riau
मराठी: रियाउ
Bahasa Melayu: Riau
Baso Minangkabau: Riau
Mìng-dĕ̤ng-ngṳ̄: Riau
монгол: Риау
Nederlands: Riau
日本語: リアウ州
norsk: Riau
پنجابی: صوبہ ریاؤ
polski: Riau
português: Riau (província)
русский: Риау
Simple English: Riau
српски / srpski: Ријау
Basa Sunda: Riau
suomi: Riau
svenska: Riau
Tagalog: Riau
தமிழ்: ரியாவு
Türkçe: Riau
українська: Ріау (провінція)
اردو: ریاو
Tiếng Việt: Riau
Winaray: Riau
粵語: 廖內
中文: 廖內省