Terence Chi-Shen Tao (陶哲軒) (born 17 July 1975, Adelaide, South Australia) is an Australian mathematician working primarily on harmonic analysis, partial differential equations, combinatorics, analytic number theory and representation theory.
A child prodigy, Tao is currently a professor of mathematics at UCLA. He was promoted to a full professor at age 24. In August 2006, he was awarded the Fields Medal. Just one month later, in September 2006, he was awarded a MacArthur Fellowship. He was elected a Fellow of the Royal Society on 18 May 2007.
Tao exhibited extraordinary mathematical abilities from an early age, attending university level mathematics courses at the age of nine. He is one of only two children in the history of the Johns Hopkins' Study of Exceptional Talent program to have achieved a score of 700 or greater on the SAT math section while just 8 years old (he scored a 760). In 1986, 1987, and 1988, Tao was the youngest participant to date in the International Mathematical Olympiad, first competing at the age of ten, winning a bronze, silver, and gold medal respectively. He won the gold medal when he just turned thirteen and remains the youngest gold medallist in the tournament's history. At age 14, Tao attended the Research Science Institute. He received his bachelor's and master's degrees (at the age of 17) from Flinders University under Garth Gaudry. In 1992 he won a Fulbright Scholarship to undertake postgraduate study in the United States. From 1992 to 1996, Tao was a graduate student at Princeton University under the direction of Elias Stein, receiving his Ph.D. at the age of 20. He joined UCLA's faculty that year.