Malcolm Richard Wilkey (December 6, 1918 – August 15, 2009) was a United States federal judge and ambassador.
Born in Murfreesboro, Tennessee, Wilkey received an A.B. from Harvard University in 1940, and served in the U.S. Army during World War II in George S. Patton's Third Army from 1941 to 1945 (he left active duty as a Major and served in the U.S. Army Reserve until 1953, when he left as a Lieutenant Colonel). After the war he enrolled in law school and received an LL.B. from Harvard Law School in 1948.
He was in private practice in Houston, Texas, from 1948 to 1954, also teaching at the University of Houston Law Center from 1949 to 1954.
He entered public service in Texas as the U.S. Attorney for the Southern District of Texas (1954–1958). In 1958 he moved to Washington, D.C., to serve as the U.S. Assistant Attorney General of the Office of Legal Counsel at the Department of Justice (1958–1959), and Assistant Attorney General of the Criminal Division (1959–1961). He returned to private practice in Texas (1961–1963), before moving on to become the General counsel and secretary of Kennecott Copper Corporation (1963–1970), during which he was also a member of the Advisory Panel on International Law for the legal adviser at the U.S. Department of State (1969–1973).