According to wikipedia: "This list of circulating currencies contains the 182 current official or de facto currencies of the 192 United Nations member states, 1 UN observer state, 9 partially recognized states, 1 unrecognized states, and 32 dependencies. Only dependencies and unrecognized countries that use a currency other than that of the sovereign state that administers them or has de jure jurisdiction over them are listed here. Currencies used in places of extraterritoriality like the United Nations or the Sovereign Military Order of Malta and scrips used by private entities like the Disney dollar and the ora are not under the purview of this list."
Source(s):
ISO 4217 currency and funds name and code elements:
http://www.iso.org/iso/support/faqs/faqs_widely_us...
List of circulating currencies:
http://en.wikipedia.org/wiki/List_of_circulating_c...