Sara Beth Bareilles ( bə-REL-iss; born December 7, 1979) is an American singer, songwriter, and actress. She has sold over three million albums and over 15 million singles in the United States. Bareilles has earned various accolades, including two Grammy Awards, as well as nominations for three Primetime Emmy Awards and three Tony Awards. In 2012, VH1 named her one of the Top 100 Greatest Women in Music.

Bareilles rose to prominence with the release of her second studio album, Little Voice (2007), which was her first recording for a major record label (Epic). The album included the hit single "Love Song", which reached number four on the Billboard Hot 100 and earned her a nomination for the Grammy Award for Song of the Year.

Bareilles made her Broadway debut when she composed music and wrote lyrics for the 2015 musical Waitress, for which she earned nominations for the Tony Award for Best Original Score and the Grammy Award for Best Musical Theater Album. She subsequently received Olivier Award nominations for its 2019 West End transfer production. She released the 2015 studio album What's Inside: Songs from Waitress, in which she performs many of the musical's songs as well as some that didn't make it into the show. She has gone on to be involved with Broadway productions, including the 2016 musical SpongeBob SquarePants and a revival of Stephen Sondheim's Into the Woods, both of which earned her Tony nominations.

Bareilles is also known for her work on television. In 2018, she received critical acclaim for her portrayal of Mary Magdalene in the NBC musical television special Jesus Christ Superstar Live in Concert, for which she was nominated for an Emmy. She currently stars as Dawn Solano in Peacock and Netflix's musical comedy Girls5eva (2021–present).