Mary Corcoran Carley, 91, a retired official of the bureau of programs and standards in the old Civil Service Commission, died of pneumonia Saturday at the Washington Hospital Center.

Mrs. Carley was born on Prince Edward Island, Canada. She moved to the United States in 1905 and lived first in Boston.

In 1919, she moved to Washington and began her career with the federal government with the Treasury Department. In 1928, she transferred to the Civil Service Commission and was engaged in making job classifications at the time of her retirement in 1956.

While working for Treasury, Mrs. Carley earned a law degree at the Washington College of Law in 1928 by attending night classes. She was admitted to the bar in the following year, but never practiced.

She was a member of the Women's Bar Association of the District of Columbia, the American University Alumni Association, the Catholic Daughters of America and the Canadian Club of Washington. She also was a member of the Glover Park Citizens Association Inc. for 43 years and was a member of the parish of Holy Trinity Catholic Church.

Her husband, James A. Carley, died in 1949.

Survivors include two brothers, Theo Corcoran, of Ferndale, Mich., and Ambrose Corcoran, of Iroquois Falls, Ontario, Canada.