The term xenocurrency refers to any currency that is traded in markets outside of its domestic borders. Its name derives from the Greek prefix "xeno," meaning "foreign."

Today, the use of the term xenocurrency is infrequent as the prefix xeno can have negative connotations in modern English. Xenophobia, for example, means an irrational fear of or hatred toward foreigners. Foreign currency, therefore, has become the preferred term for referring to non-domestic currencies.