Shoichi Sakata (?? ??, Sakata Shoichi, 18 January 1911 – 16 October 1970) was a Japanese physicist who was internationally known for theoretical work on the subatomic particles.
He proposed the two meson theory, the Sakata model (an early precursor to the quark model), and the Maki-Nakagawa-Sakata theory on the neutrino mixings.
After the end of World War II, he joined other physicists in campaigning for the peaceful uses of nuclear power.