This article considers the Soviet Union’s successful efforts to employ more women specialists in nuclear science and technology, from the Bolshevik revolution in 1917 and the Soviet atomic bomb project to the Cold War and the present. Despite their contributions to building a Cold War military machine, women rarely reached the pinnacle of the scientific enterprise due to persistent views about their lesser capabilities as specialists. After the collapse of the Soviet Union, in a vastly changed social, political, and cultural climate, the claimed socialist equality of women gave way to more traditional views of their status in Russian society. For the nuclear enterprise, this change emerged in activities that had disappeared under communism such as the annual “Miss Atom” beauty pageant, a striking departure from Soviet attempts to involve women equally in science and technology.