A currency is a kind of money and medium of exchange. Currency includes paper, cotton, or polymer banknotes and metal coins. States generally have a monopoly on the issuing of currency, although some states share currencies with other states. For the purposes of this list, only currencies that are legal tender, including those used in actual commerce or issued for commemorative purposes, are considered "circulating currencies". This includes fractional units that have no physical form but are recognized by the issuing state, such as the United States mill,[A] the Egyptian millime,[B] and the Japanese rin.[C] Currencies used by non-state entities, like the Sovereign Military Order of Malta, scrips used by private entities, and other private, virtual, and alternative currencies are not under the purview of this list.
List of circulating currencies by state or territory
^Four currencies circulate in the partially recognized state of the Sahrawi Arab Democratic Republic, which claims the territory of Western Sahara. The Moroccan dirham is used in the Moroccan-administered part of the territory and the Sahrawi peseta is the commemorative currency of the Sahrawi Republic. Additionally, some de facto currencies circulate in the territory: the Algerian dinar is used in Sahrawi refugee camps in Tindouf and the Mauritanian ouguiya is used in Lagouira, which is under Mauritanian administration.