Constantine Grigorovich-Barsky, 64, a news analyst and political editor with the Vice of America, died of cancer Monday at Doctor's Hospital of Prince George's County.

At the time of his death, he was chief of the news and commentary branch in the Russian language division. He had joined the VCA here in 1955.

In 1970, Mr. Grigorovich-Barsky received the Meritorious Honor Award of the U.S. Information Agency for his coverage of this country's space flights.

In 1976, he was given the USIA Superior Honor Award for his "highly authoriative interpretation of events and imaginative approach to broadcasting (which) helped strengthen his prestige in the Soviet Union."

A spokesman for the VOA, which is part of the USIA, said yesterday that Grigorovich-Barsky was "a household word to millions of VOA listeners in the Soviet Union.They relied on him for a thorough and clearly understood analysis of new events and explanations of the U.S. foreign policy."

Born in Kiev, Russia, Mr. Grigorovich-Barsky moved to Yugoslavia as a child with his family during the Russian Revolution. He was educated in Belgrade and Ljubljana, earning the equivalent of a doctor's degree in law.

During World War II, he spent three years in Nazi forced labor camps. He was liberated by American armed forces in 1945. He worked for the United Nations Relief and Rehabilitation Administration in Germany after the war.

Mr. Grigorovich-Barsky came to this country in 1947. Three years later he became an instructor in Russian at the Army Language School in Monterey, Calif., where he remained until joining the VOA.

In 1964, he also became a foreign service officer and was assigned briefly to a USIA post in Belgrade.

Mr. Grigorovich-Barsky twice accompanied Soviet Cosmonauts when they visited this country in 1969 and 1970. He received a citation from the National Aeronautics and Space Administration for this service.

He was a member of the Russian Orthodox Church of St. Nicholas in Washington.

He is survived by his wife, Marina Grigorovich-Barsky, of the home in Langham; a son, Nikita, and a daughter, Olga Rabchevsky, both of Kensington; a brother, Boris, of Newtown, Conn., and two grandchildren.