Nano–Mugen Compilation 2009 is a compilation album released by Asian Kung-Fu Generation to advertise their eighth annual Nano-Mugen Festival, held at the Yokohama Arena through July 19-20th. It collected songs from various artists performing at the festival, such as Nada Surf and Unicorn, in addition to a new song from Asian Kung-Fu Generation. Rockin'On called the album "an excellent disc"; it peaked at number 11 on the Oricon Albums Chart.