RO is the two-letter country abbreviation for Romania according to ISO-3166 Alpha 2. Romania is a country located in the crossroads of Central, Eastern, and Southeast Europe. It is the twelfth-largest country in Europe and the sixth-most populous member state of the European Union. The official language of Romania is Romanian, and the recognized minority languages include Hungarian, German, Romani, Ukrainian, and others. The Romanian leu (RON) is the currency used in Romania, and the country code for Romania is +40.