Duncan Sheik (born November 18, 1969) is an American singer-songwriter and composer. Sheik is known for his 1996 debut single "Barely Breathing", which earned him a Grammy Award nomination for Best Male Pop Vocal Performance. He has composed music for motion pictures and Broadway musicals, winning the 2006 Tony Awards for Best Original Score and Best Orchestrations for his work on the musical Spring Awakening.
Sheik is a native of Montclair, New Jersey. Following his parents' divorce, he split time between his father's house in New Jersey and his mother's home in South Carolina. He is the half-brother of Broadway actress Kacie Sheik. Sheik's Juilliard-trained grandmother introduced him to the piano, and he later took up the electric guitar. By age 12, he was playing guitar with high school students in a cover band. After graduating from Phillips Academy, Andover in 1988, Sheik studied semiotics at Brown University; while at Brown, he played guitar in a band with fellow Brown student Lisa Loeb. Following his graduation from Brown in 1992, he moved to Los Angeles.
Concert dates in support of Sheik's 2011 album Covers 80's were canceled when Sheik sought treatment for alcohol addiction. In a message to fans on his tumblr blog, Sheik noted that he had entered a treatment center on the same day his latest album was released and had told his staff, "My record is coming out and I’m checking in."
Sheik has a daughter, Ines, with his long-time girlfriend, model Nora Ariffin.
Sheik practices Nichiren Buddhism and is a member of the US branch of the worldwide Buddhist association Soka Gakkai International.