"Cannonball" is a song written and performed by Irish folk singer Damien Rice. It was released on 1 February 2002, as the second single from his debut album O. It was later re-released in 2003, 2004 and 2011.

O is the debut studio album by Irish musician Damien Rice, originally released on 1 February 2002, in Ireland and in the United Kingdom. The album is dedicated to Rice's friend Mic Christopher, a musician who died of a head injury shortly before the album's release at the end of 2001.