Qian Sanqiang (Chinese: 钱三强; October 16, 1913 – June 28, 1992), also known as Tsien San-Tsiang, was a Chinese nuclear physicist. Due to his central role in the development of China's nuclear industry and nuclear weapons program, he is referred to as China's "father of the atomic bomb."
A native of Huzhou, Zhejiang Province, China, Qian was born in Shaoxing, the son of the scholar Qian Xuantong. Qian attended Peking University and Tsinghua University, graduating in 1936 in the same class as his future wife He Zehui. Qian went to France in 1937. He studied in the Collège de Sorbonne and Collège de France, doing research under Frédéric Joliot-Curie and Irène Joliot-Curie. He obtained the French doctorate in 1940.
Qian returned to China in 1948 with his wife, the nuclear physicist He Zehui, where he took up a professorship at the Tsinghua University and in 1950 founded the Institute of Modern Physics of the Chinese Academy of Sciences (CAS), today known as the China Institute of Atomic Energy.
In 1954 he joined the Communist Party of China. He served successively as Director of the Institute of Modern Physics under the Chinese Academy of Sciences, Vice-Minister of the No. 2 Ministry of the Machine-building Industry, Vice-President of the Chinese Academy of Sciences and honorary Chairman of the China Association for Science and Technology.
| President of Zhejiang University