The keyboard player, who co-founded the band with Jim Morrison, passed away at a clinic in Germany, according to a post on the band's Facebook.com page. He was 74.
Bandmate Robby Krieger has released a statement which reads, "I was deeply saddened to hear about the passing of my friend and bandmate Ray Manzarek.
"I'm just glad to have been able to have played Doors songs with him for the last decade. Ray was a huge part of my life and I will always miss him."