Alan "Al" Greenwood (born October 20, 1951, New York) is an American rock musician who was a founding member and keyboardist of the rock band Foreigner from 1976 to 1980. He performed on the albums Foreigner (1977), Double Vision (1978) and Head Games (1979).
In 1981, he formed the band Spys with former Foreigner bass player Ed Gagliardi, John Blanco, John Digaudio and Billy Milne and recorded the albums Spys (1982) and Behind Enemy Lines (1983).
Greenwood would go on to play keyboards on one-time Rainbow (and future Yngwie Malmsteen's Rising Force) frontman Joe Lynn Turner's 1985 debut solo album, Rescue You. Greenwood also played keyboard on the song "Shake, Shake, Shake" by Sal "the G-man" Governale in the late eighties.