Mongol800 (モンゴル はっぴゃく, mongoru happyaku, stylized as MONGOL800) is a Japanese three-piece punk rock band from Urasoe, Okinawa, Japan, formed in 1998.

In 2001, despite low media attention, they produced a commercially-prominent second album Message, which eventually sold over two million record copies.

[1] Due to the success of the album the musicians were offered label deals from several major labels and an invitation to participate at the Kōhaku Uta Gassen which the band declined to stay independent.

The album has sold 2 million copies by 2003, despite no media exposure.

This article about a Japanese band or other musical ensemble is a stub.