<P> There are eleven currencies of the European Union as of 2015 used officially by member states . The euro accounts for the majority of the member states with the remainder operating independent monetary policies . Those European Union states that have adopted it are known as the eurozone and share the European Central Bank ( ECB ) . The ECB and the national central banks of all EU countries , including those who operate an independent currency , are part of the European System of Central Banks . </P>
what is the name given to the common currency to the european union
The euro