Sidney Gottlieb (August 3, 1918 – March 7, 1999) was an American military psychiatrist and chemist probably best-known for his involvement with the Central Intelligence Agency's mind control program MKULTRA. Sidney was born in the Bronx under the name Joseph Scheider. He received a Ph.D. in chemistry from the California Institute of Technology. A stutterer from childhood, Gottlieb got a master's degree in speech therapy. He also had a club foot, but this did not stop him from practicing folk dancing, a lifelong passion.