The currency in Japan is the yen, denoted by the symbol "¥" and the code "JPY." There are different denominations of banknotes and coins, with the most common banknotes being 1,000, 5,000, and 10,000 yen. The yen is a significant currency in the global market and is often regarded as a stable investment. It is widely traded on international foreign exchange markets and is the third most traded currency after the US dollar and the euro. The Bank of Japan is responsible for issuing and managing Japan's currency, playing a key role in the nation's economy.