The Singapore dollar or Dollar (sign: $; code: SGD) is the official currency of Singapore. It is normally abbreviated with the dollar sign $, or alternatively S$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.

Between 1845 and 1939, Singapore used the Straits dollar. This was replaced by the Malayan dollar, and, from 1953, the Malaya and British Borneo dollar, which were issued by the Board of Commissioners of Currency, Malaya and British Borneo.

Singapore continued to use the common currency upon joining Malaysia in 1963 but, two years after Singapore's expulsion and independence from Malaysia in 1965, the monetary union between Malaysia, Singapore and Brunei broke down. Singapore established the Board of Commissioners of Currency, Singapore, on April 7, 1967 and issued its first coins and notes. Nevertheless, the Singapore dollar was exchangeable at par with the Malaysian ringgit until 1973, and interchangeability with the Brunei dollar is still maintained.

Singapore (ⁱ/ˈsɪŋəpɔər/ SI-ngə-pohr), officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, 137 kilometres (85 mi) north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the Singapore Strait to its south. Singapore is highly urbanised but almost half of the country is covered by greenery. More land is being created for development through land reclamation.