Daniel S. Gerig, 73, a retired official of the Social Security Administration here, died April 29 in Venice, Fla., where he had lived since 1968. He had cancer.

Mr. Gerig retired in 1966 as chief of comparative studies in the SSA office of research and statistics. He had joined the agency in 1957 as a research analyst in program research.

Before that, he had been with the social insurance division of the Untied Nations International Labor Office in Montreal and Geneva, Switzerland, for 10 years.

He was born in Goshen, Ind., and graduated from The College of Wooster in Ohio. He taught ecomonics at the University of Wisconsin, where he received a doctorate in 1933.

Mr. Gerig first came to Washington in 1934 to work as an ecomonics analyst with the National Recovery Administration. He then was with the Works Progress Administration, the Social Security Board and the Federal Security Agency here until 1947.

He is survived by his wife, Enid, of the home; two sons, Stephen R., of Cape Canaveral, Fla., and Thomas M., of Raleigh, and his stepmother, Mrs. Daniel S. Gerig Sr., both of Goshen; a stepbrother, Richard M. Umble, of Sun City, Ariz.; a stepsister, Mrs. Richard Kulp, of Syracuse, N.Y., and two grandchildren.*