"Doctor Doctor" is a very melodious, but still heavy indeed, hard rock song, released by the British hard rock band UFO, written by the band's, at the time, new guitarist, Michael Schenker and original singer Phil Mogg. It was the band's first hit single in the UK. and is included in UFO's third LP-album Phenomenon of 1974. It was released as a single in Europe, but not in the United Kingdom.
The song eventually charted in 1979, when a live version taken from the live album Strangers in the Night was released as a single.