word | | Currency (code) |
| Union | Finland | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | France | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Germany | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Greece | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Ireland | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Italy | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Luxembourg | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Netherlands | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Portugal | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by financial institutions of member countries; on 1 January 2002, the ... |
| Union | Spain | euro (EUR) note: on 1 January 1999, the European Monetary Union introduced the euro as a common currency to be used by the financial institutions of member countries; on 1 January 2002 ... |
| unit | China | Renminbi (RMB); note - also referred to by the unit yuan (CNY) |
| Uruguayan | Uruguay | Uruguayan peso (UYU) |
| US | American Samoa | US dollar (USD) |
| US | British Indian Ocean Territory | both the British Pound (GBP) and the US Dollar (USD) are accepted |
| US | British Virgin Islands | US dollar (USD) |
| US | Ecuador | US dollar (USD) |
| US | El Salvador | US dollar (USD) |
| US | Guam | US dollar (USD) |
| US | Guatemala | quetzal (GTQ), US dollar (USD), others allowed |
| US | Marshall Islands | US dollar (USD) |
| US | Micronesia, Federated States of | US dollar (USD) |
| US | Northern Mariana Islands | US dollar (USD) |
| US | Palau | US dollar (USD) |
| US | Panama | balboa (PAB); US dollar (USD) |
| US | Puerto Rico | US dollar (USD) |
| US | Saint Barthelemy | euro (EUR); note - US dollar (USD) widely used |
| US | Saint Martin | euro (EUR); note - US dollar (USD) widely used |
| US | Timor-Leste | US dollar (USD) |
| US | Turks and Caicos Islands | US dollar (USD) |