The current currency used in Japan is the yen (JPY). The yen has been in use since the late 19th century and is one of the world's most traded currencies. It is subdivided into smaller units called sen, although sen are no longer used in everyday transactions. The symbol for the yen is ¥, and it is often represented in financial contexts using the code JPY. The value of the yen can fluctuate based on various economic factors, including trade balances, interest rates, and overall market sentiment. It plays a significant role in the global economy.