Ronald Shephard

Ronald W. Shephard
Born	(1912-11-22)November 22, 1912
Died	July 22, 1982(1982-07-22) (aged 69)
Nationality	American
Alma mater	University of California, Berkeley
Known for	Shephard's lemma
Scientific career
Fields	Mathematical economics
Doctoral advisor	Griffith C. Evans

Ronald William Shephard (November 22, 1912 – July 22, 1982) was professor of engineering science at the University of California, Berkeley.

He is best known for two results in economics, now known as Shephard's lemma and the Shephard duality theorem. Shephard proved these results in his book Theory of Cost and Production Functions (Princeton University Press, 1953), which Dale W. Jorgenson, in the preface of a reprint, called "the most original contribution to economic theory of all time."