Beautiful Nightmare is the second studio album by British-Australian recording artist Reece Mastin. It is the follow-up to Mastin's self-titled debut album, and his first album to include original material. In composing the album, Mastin collaborated with several songwriters and producers, including DNA Songs, Benji Madden, Lindsay Rimes, Damon Sharpe, Louis Biancaniello, Brian Howes and Rune Westberg, among others.