Christopher John Joannou (born 10 November 1979) is an Australian musician, best known as the bass guitar player for the successful alternative rock band Silverchair. Born in Newcastle, New South Wales, he has a twin sister named Louise and an older sister Nicole. He was the first of the three band members to cut his long hair short. Joannou is of Macedonian heritage.
As well as being a well known bass guitarist, Joannou was the assistant producer for The Mess Hall albums Feeling Sideways and the ARIA award winning Notes From A Ceiling.
He has used mainly G&L and Fender Precision Basses, and almost exclusively uses Ampeg B-15 Portaflex combos. As reported to gearwire.com, Joannou uses an Ampeg SVT-2 into and Ampeg 810 cabinet and a new Ampeg B15 combo in his live set-up.
In 2006 Joannou spoke at the launch of a mental health scholarship set up to honor his cousin Nathan Trepezanov who had committed suicide at the age of 21 in January .
