Colin Charles Greenwood (born 26 June 1969 in Oxford, Oxfordshire, England), also known as Coz, is a member of English rock band Radiohead. He is best known as their bass player, although he does play other instruments (see below). He is the older brother of fellow band member, guitarist Jonny Greenwood.
In December 1998, Greenwood married Molly McGrann, an American literary critic and novelist. They have two sons, Jesse, born in December 2003 and Asa, born in December 2005. They live in a small village in Oxfordshire.