Xu Guangxian (simplified Chinese: 徐光宪; traditional Chinese: 徐光憲; pinyin: Xú Guāngxiàn; born November 7, 1920 in Shaoxing, Zhejiang), is a Chinese chemist and academician of Chinese Academy of Science. He is former president of Chinese Chemical Society, and known as "The Father of Chinese Rare Earths Chemistry".
He studied in several schools in Zhejiang (now known as Zhejiang University and Zhejiang University of Technology), then he entered Jiaotong University in Shanghai (now known as Shanghai Jiaotong University), and received B.S in 1944. 1944-1946, he was a technician in a chemical company in Shanghai.
Xu went to USA in 1948, studied in the graduate school of the Washington University in St. Louis from Jan to Jun. 1948-1951, he studied at the Columbia University in New York, and received M.S. in 1949 and PhD in 1951 (under C. D. Beckmann). 1949 Feb, he became a member of Phi Lambda Upsilon. 1950 Oct, he became a member of Sigma Xi.
1951, he went back to China with his wife Gao Xiaoxia - also a chemist. In the same year, he became the associate professor in the Department of Chemistry, Peking University. Soon later he was promoted to be a full professor. He became a dean of the department in 1956, and especially directed the department of radiation chemistry. Xu also was involved in the Chinese nuclear weapon development program, within which he played a role in separating and extracting the nuclear elements, especially Uranium-235.
Xu played an important role in the chemistry of rare earths in China. He systematically studied the chemical and physical properties of the rare earths found in China and developed several methods to separate and extract them. Xu also has an important career in Chinese chemical industry.
- Academician, Chinese Academy of Science, 1980 election
- Former president, Chinese Chemical Society (CCS) 
- Vice-president, Chinese Society of Rare Earths (CSRE) 
- Editor-in-Chief, Rare Earths (a 3-volume monograph on the science and technology of rare earths in China), Metallurgical Industry Press, Beijing, 1995 
- Editor-in-chief, Journal of Rare Earths 
- 596 - China's first nuclear weapons test.
- CV B.S., 1944, Jiaotong University; M.S., 1949, Columbia University; Ph.D., 1951, Columbia University
- 百度百科 1959年2月 开始从事铀-235同位素分离方法的研究，讲授核燃料化学。
- Cindy Hurst China's Rare Earth Elements Industry: What Can the West Learn? Institute for the Analysis of Global Security March 2010, p. 8
- Science News Focus (material science), As China's Rare Earth R&D Becomes Ever More Rarefied, Others Tremble, by Richard Stone, 11th Sep, 2009
- The Chinese Society of Rare Earths(CSRE)
- Selected publications of Xu Guangxian
- Journal of Rare Earths: Editorial Committee
- 中国稀土学报 Journal of Rare Earths (English) (Chinese)
- Xu Guangxian in Baidu.com (Chinese)
- Xu Guangxian at Peking University
- Xu Guangxian's full biography (English)