Thomas D. Fox, 82, a retired Army lieutenant colonel and intelligence official of the Drug Enforcement Administration, died of multiple organ failure Oct. 10 at Inova Fairfax Hospital. He lived in Vienna.

Mr. Fox retired in 1979 after seven years as director of the DEA's strategic intelligence staff. He was previously chief of the counterintelligence operations staff of the Defense Intelligence Agency.

Mr. Fox was a police officer in his native New York before joining the Army. He served in the Pacific during World War II. After graduating from the Command and General Staff College, he was an intelligence officer in Europe. He retired from the military in 1962.

His honors included awards from the Freedom Foundation for his essays about the evolution of American democracy.

Mr. Fox volunteered in area hospitals and hospices and was a member of the Association of Former Intelligence Officers and the Army-Navy Club.

His marriage to Anna Fox ended in divorce.

Survivors include his wife of 25 years, Nancy Cusick Fox of Vienna; four daughters from his first marriage, Victoria Fox of Charlottesville, Catherine Mathis of Atlanta, Susan Fox of Apex, N.C., and Elizabeth Fox of Moscow, Idaho; two stepchildren, Christie Ann O'Neill of Washington and Alan P. Cusick of Denver; six grandchildren; two sisters; and a brother.