William Langley Banfield, 69, a retired administrative officer with the Central Intelligence Agency, died Friday in Chicago after a heart attack. A resident of College Park for 40 years, he was stricken at O'Hare Airport while en route to visit relatives in Wisconsin.

Mr. Banfield retired from the CIA in 1967 after 2o years as an administrative officer in the photo identification section. He had received a number of certificates of recognition, including a presidential commendation. a

He was born in Chicago and came to Washington as a child. He graduated from old Central High School.

Mr. Banfield started his government service with the Agriculture Department in the early 1930s. Later he worked for the newly formed Social Security Administration before joining the CIA.

After retirement, he had worked for the Maryland State Racing Commission.

He was a member of the parish of Holy Redeemer Catholic Church in College Park.

His wife, Gertrude J. (Jo) Banfield, died in 1978.

Survivors include a son, Dr. William J., of Easton Md.; three daughters, Mary Jo Dorough of Bethesda, Kathleen Hammond of Huntingtown, Md., and Teresa A. Barnes of Rocky Mount, N.C.; two brothers, the Rev. Lawrence Edward, O.P. and Charles F., both of California, and eight grandchildren.