Mary E. Gammill, 60, who retired in September as assistant executive officer of the International Communication Agency, died Friday at George Washington University Hospital.

She was hospitalized Dec. 13 after suffering an apparent heart attack while visiting here. She lived in Los Angeles.

At the time of her retirement, Miss Gammill was posted in New Delhi. Earlier overseas assignments had inculded Abidjan, Ivory Coast, Kabul, Afghanistan, Sofia, Bucharest, Vienna, and Rome.

In between assignments abroad, she had tours of duty here at ICA and its forerunner, the U.S. Information Agency, and had lived in Washington and later Arlington.

Miss Gammill was born in Monte Vista, Colo. She first came to Washington in 1941 and worked as a civilian for the Army Air Corps until enlisting in the WACs in 1943. She served in London and Paris during World War II and in Weisbaden and Frankfurt, Germany, after the war.

She left the WACs in 1946 as an airman first class, technician third grade, and earned a degree in international relations from the University of Southern California. She then returned here to work for the State Department and USIA.

There are no immediate survivors.

It is suggested that expressions of sympathy be in the form of contributions to the American Heart Association.