? is the second album by German pop rock band Nena and the third studio album to feature its lead singer, Gabriele "Nena" Kerner. It was released on 27 January 1984, just a few months before the band's first international album 99 Luftballons, which contains songs from their debut album Nena (1983) and this album, some of them re-recorded with English lyrics.

Nena was a German Neue Deutsche Welle band formed in West Berlin in 1981. In 1983 and 1984, their German-language song "99 Luftballons" reached number one in the singles charts of countries around the world.