Diamond Head is the first studio album by English rock musician Phil Manzanera. It was released in 1975, originally on Island Records in the UK and in the US on Atco Records. The sound quality on the US album was deemed to be worse than the UK album, so the UK import became a popular seller in the speciality record shops who sold Roxy Music and other UK bands. The diesel locomotive featured on the cover art is an EMD E9.

Phillip Geoffrey Targett-Adams, known professionally as Phil Manzanera, is an English musician, songwriter and record producer. He is the lead guitarist with Roxy Music, and was the lead guitarist with 801 and Quiet Sun. In 2006, Manzanera co-produced David Gilmour's album On an Island, and played in Gilmour's band for tours in Europe and North America. He wrote and presented a series of 14 one-hour radio programmes for station Planet Rock entitled The A-Z of Great Guitarists.