At Grace Cathedral (also known as Vince Guaraldi at Grace Cathedral and The Grace Cathedral Concert) is a live performance album by jazz pianist Vince Guaraldi, released in the U.S. in September 1965 on Fantasy Records. The performance was recorded live at Grace Cathedral in San Francisco, California on May 21, 1965. It is considered to be the world's first "jazz mass" presented during a church service. At Grace Cathedral was released on CD in 1997 by Fantasy under the title The Grace Cathedral Concert.