The Fault in Our Stars is the fourth solo novel by author John Green, in which a sixteen-year-old cancer patient named Hazel is forced by her parents to attend a support group, where she meets and falls in love with the seventeen-year-old Augustus, an ex-basketball player and amputee.

On his Tumblr blog and his YouTube vlog, Green stated that "the title is inspired by a famous line from Shakespeare's play Julius Caesar (Act 1, scene 2). The nobleman Cassius says to Brutus, 'The fault, dear Brutus, is not in our stars, / But in ourselves, that we are underlings.'"

On February 1, 2012, the film rights to the book were optioned by Fox 2000.[1]