Alexander V. Chukayeff, 76, a retired writer on Soviet affairs for the old United States Information Agency, died Oct. 1 in Moscow after suffering an apparent heart attack. He was on vacation at the time.

During World War II, Mr. Chukayeff served with the U.S. Army overseas. In 1945, he joined the Department of State as an editor and writer. For the next two years, he served as chief of information for the War Department in Berlin. He then returned to the State Department.

In 1953, he transferred to USIA, where he worked as a social science analyst and an intelligence research officer. When he retired in 1972, he was a writer on Soviet affairs.

Mr. Chukayeff, who lived in Bethesda, was born in St. Petersburg, Russia. He had served in the White Russian Army during the Russian civil war and lived in China before coming to this country about 1925. He earned a bachelor's degree in economics from the University of Pennsylvania in 1930.

Survivors include his wife, Lilly E., of the home, and a daughter, Maria McCarthy, of The Hague, the Netherlands.

The family suggests that expressions of sympathy be in the form of contributions to the Heart Association Fund Memorial, Washington.