Dr. Paul David Cantor, 63, a physician and lawyer and a leading consultant on medical jurisprudence, died Sunday at Suburban Hospital in Bethesda after a stroke.

Dr. Cantor had a private medical practice in Bethesda from 1942 until 1975, when he joined the staff of Suburban Hospital as an emergency medicine physician. He remained on the staff of Suburban until his death.

In 1955, after earning a doctorate in law from Georgetown University, where he earlier had earned a medical degree, he became an adjunct professor of medical jurisprudence and a professorial lecturer on legal medicine at the university's law and medical centers. He also was a medico-legal consultant to the Department of Justice.

A native of Fairmont, W. Va., Dr. Cantor graduated from the University of West Virginia. During World War II, he served in the Army Medical Corps.

He was the editor-in-chief of the 10-volume treatise, "Traumatic Medicine and Surgery for Attorneys," published in 1959 and was executive editor of "Trauma," published in 1960.

He received an honorary doctor of laws degree from Georgetown Univesity in 1971 and the university's Vicennial Medal for his contributions in 1978.

Dr. Cantor ws a volunteer with the Montogomery County Police League. He was a fellow of the International Academy of Law and Science and served on its board of regents. He also was a member of the American D.C. and Montgomery County medical societies and of the American Arbitration Association.

Survivors include his wife, Eleanor F., of the home in Chevy Chase; two sons, Paul D. Jr., of Rockville, and Jon A., of Severn, Md.; a daughter, Charlene R. Campbell, of Bethesda; his mother, Sara G. Robinson, of New York City, and three grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Paul D. Cantor Memorial Scholarship Fund at the Georgetown University Medical School.