Live!! +one is a live EP that was initially released only in Japan on November 1980 by the British heavy metal band Iron Maiden. All the tracks were recorded live at the Marquee Club in London on 4 July 1980. The recordings of "Sanctuary" and "Drifter" were only ever issued on this EP, but the other two tracks have appeared as B-sides.
In 1984 the EP was reissued in Greece with an expanded track list, but only "I've Got the Fire" was actually recorded at the Marquee Club. The other additional tracks appeared on the Maiden Japan EP and "Prowler" was taken from the band's self-titled debut album.