The dollar has been the currency of Barbados since 1935. Globally its currency has the ISO 4217 code BBD, however, unofficially in Barbados the International vehicle registration code BDS is also commonly used, a currency code that is otherwise reserved for Bangladesh outside Barbados. As such the present Barbados dollar has the official ISO 4217 code of BB which matches the [dot] .bb Cc-TLD domain names classification for Barbados under ISO 3166, plus D for dollar in the foreign exchange market. The Barbadian dollar is considered as a currency which can be divided into 100 cents, though the 1 cent coin is in the process of being phased out. In terms of population, Barbados is the third smallest country in the world after Tonga and the Seychelles to have an independent currency and monetary policy.

Dollar is the name of more than 25 currencies. The United States dollar, named after the international currency known as the Spanish dollar, was established in 1792 and is the first so named that still survives. Others include the Australian dollar, Brunei dollar, Canadian dollar, Eastern Caribbean dollar, Hong Kong dollar, Jamaican dollar, Liberian dollar, Namibian dollar, New Taiwan dollar, New Zealand dollar, Singapore dollar, Trinidad and Tobago Dollar and several others. The symbol for most of those currencies is the dollar sign $ in the same way as many countries using peso currencies. The name "dollar" originates from Bohemia and a 29 g silver-coin called the Joachimsthaler.