Alan David Lourie (born January 13, 1935) is a United States circuit judge of the United States Court of Appeals for the Federal Circuit.

Born in Boston, Massachusetts, Lourie received an BA degree from Harvard College in 1956, a Master of Science in Organic Chemistry from the University of Wisconsin in 1958, a Doctor of Philosophy in Chemistry from the University of Pennsylvania in 1965, and a Juris Doctor from Temple University School of Law in 1970.

He was in-house counsel, to SmithKline Beecham Corporation from 1964 to 1990.

[1] On January 24, 1990, Lourie was nominated by President George H. W. Bush to a seat on the United States Court of Appeals for the Federal Circuit vacated by Judge Daniel Mortimer Friedman.

[1] He has been described as having a "pro-patent outlook" in the book Innovation and its Discontents by Harvard Business School professor Josh Lerner and by Brandeis University economics professor Adam B.