Diane Eve Warren (born September 7, 1956, Van Nuys, California) is a prolific American songwriter. Her songs have received six Academy Award nominations, four Golden Globe nominations, and seven Grammy Award nominations, including one win. She was inducted into the Songwriters Hall of Fame in 2001. Her success in the US has been paralleled in the UK, where she has been rated the third most successful female artist.
She was the first songwriter in the history of Billboard to have seven hits, all by different artists, on the singles chart at the same time. Warren owns her own publishing company, Realsongs, which gives her control over her compositions. Meanwhile, her songs have been featured in more than 70 films or television shows listed on the Internet Movie Database.