Terence Paul "Terry" Speed (born 14 March 1943 in Victor Harbor, South Australia),[1] FAA FRS[3] is an Australian statistician.

Speed obtained a Ph.D. from Monash University in 1968 with a thesis titled Some topics in the theory of distributive lattices under the supervision of Peter D.

[2][4] After his PhD, Terry Speed took a lecturing position in Sheffield (United Kingdom), at the Manchester-Sheffield School of Probability and Statistics.

In 1984, Terry Speed became chief of the division of mathematics and statistics at CSIRO, the Commonwealth Scientific and Industrial Research Organisation.

After a two month visit in the department of statistics at the University of California, Berkeley in 1984, he applied for a permanent position and became a tenured professor there in 1987.

In 2016, a former colleague and a former post-doctoral researcher from the University of California, Berkeley, filed a complaint of sexual harassment against Speed, with the allegedly infringing behavior occurring in 2002.

At other time in his career, Speed has made seminal contributions to bioinformatics, statistical genetics, the analysis of designed experiments, graphical models and Bayes networks.