Jack D. Klingeman Jr., 46, a mathematician who was founder and president of Biometric Analysis Group Inc., a Chevy Chase company working with computers on medical research, and a former research associate at Georgetown University's medical school, died of cancer July 27 in his home in Annapolis.

Mr. Klingeman moved to Washington in 1964 and was a consultant for AT&T, where he worked on the Apollo space project, and was a technical consultant to the arms control and disarmament group of the Bendix Corp.

In 1965, he joined Georgetown University, where he was named research associate and became head of the data processing division of the Research Center for Cardiovascular Data Processing. His research included work in automated systems for medical diagnoses. He also worked with medical researchers from the Veterans Administration.

He founded the Biometric Analysis Group in 1971.

He was a member of the American Heart Association, the Jefferson Islands Club, the National Rifle Association and the Woman's National Democratic Club.

Mr. Klingeman was a native of Texas and a graduate of the University of Houston. He earned a master's degree in mathematics at Trinity University in San Antonio, and studied German and mathematics at the University of Vienna and the Georg-August-Universitat in Gottingen, Germany.

Survivors include his wife, Mary Carolyn Kyle Klingeman of Annapolis; his parents, Jack and Zulema Klingeman of San Antonio, and a brother, Fred W., of St. Louis.