Map - Riau Islands Province (Provinsi Kepulauan Riau)

The Riau Islands (Kepulauan Riau) is a province of Indonesia. 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 South China Sea, the province shares water borders with neighboring countries such as Singapore, Malaysia, and Brunei. The Riau Islands also has a relatively large potential of mineral resources, energy, as well as marine resources. The capital of the province is Tanjung Pinang and the largest city is Batam.

The Riau archipelago was once part of the Johor Sultanate, which was later partitioned between the Dutch East Indies and British Malaya after the Anglo-Dutch Treaty of 1824, in which the archipelago fell under Dutch influence. A Dutch protectorate, the Riau-Lingga Sultanate, was established in the region between 1824 and 1911 before being directly ruled by the Dutch East Indies. The archipelago became a part of Indonesia following the occupation of the Japanese Empire (1942–1945) and the Indonesian National Revolution (1945–1949). The Riau Islands separated from the province of Riau in September 2002, becoming Indonesia's third-youngest province.

A free trade zone of the Indonesia–Malaysia–Singapore Growth Triangle, the Riau Islands has experienced rapid industrialisation since the 1970s. The Riau Islands is one of the country's most prosperous provinces, having a GDP per capita of 72571750 IDR (US$8300.82) as of 2011, the fourth largest among all provinces in Indonesia after East Kalimantan, Jakarta and Riau. In addition, as of 2018, the Riau Islands has a Human Development Index of 0.748, also the fourth largest among all provinces in Indonesia after Jakarta, Special Region of Yogyakarta and East Kalimantan.

The population of the Riau Islands is heterogeneous and is highly diverse in ethnicity, culture, language and religion. The province is home to different ethnic groups such as the Malays, Tionghoa, Javanese, Minangkabau and others. Economic rise in the region has attracted many immigrants and labors from other parts of Indonesia. The area around Batam is also home to many expatriates from different countries. Approximately 80% of these are from other Asian countries, with most of the westerners coming from the United Kingdom, rest of Europe, as well as Australia and the United States. The province also has the second largest number of foreign tourist arrivals in Indonesia, after Bali.