Christopher James Cester is an Australian musician, songwriter and producer, best known as the co-founder of Australian rock band Jet. Cester served as the band's drummer – as well as providing vocals, percussion and occasionally rhythm guitar – from their 2001 formation until 2024. As a member of Jet, Cester has won awards as a songwriter from the Australasian Performing Right Association (APRA), including in 2005 as Songwriter of the Year, and 2011 for "Seventeen", which won "Most Played Australian Work" and "Rock Work of the Year".