New Moon (stylized as new moon) is a 2006 romantic fantasy novel by author Stephenie Meyer. The second installment in the Twilight series, the novel continues the story of Bella Swan and her relationship with vampire Edward Cullen as she enters her senior year of high school. When Edward leaves Bella after his brother attacks her, she is left heartbroken and depressed for months until Jacob Black becomes her best friend. However, her life twists once more when Jacob's nature reveals itself and Edward's sister decides to visit.

According to Meyer, the book is about losing true love.[5] The title refers to the darkest phase of the lunar cycle, indicating that New Moon is about the darkest time of protagonist Bella Swan's life.[6] Meyer wrote the book before Twilight was published. Writing the book was difficult for Meyer as she feared the readers' reaction to the book and often cried as she described Bella's pain.