Robert Cohn, 60, an administrative law judge for the National Labor Relations Board, died of cancer Friday at Sibley Memorial Hospital. He lived in Potomac.

Mr. Cohn first joined the staff of the NLRB in the late 1940s. In the early 1950s, he left the board to become legal counsel for the International Ladies' Garment Workers Union in Atlanta. He remained there until 1964, when he rejoined the NLRB.

Born in Winston-Salem, N.C., he earned a bachelor's degree in economics from the University of North Carolina. In 1947, he earned a law degree from Yale University's law school.

Mr. Cohn had a private law practice and was an attorney for the Department of Labor in Cincinnati and Winston-Salem, N.C., before joining the NLRB.

He was a navigator with the Army Air Corps in Europe for four years during World War II, attaining the rank of captain.

Mr. Cohn held rankings in men's doubles in the Middle Atlantic Lawn Tennis Association. He was a member and former tennis champion at Kenwood Golf and Country Club and a former NLRB tennis champion.

Survivors include his wife, Sheree L., and two daughters, Julie E., and Kafi E., all of Potomac; two other daughters, Leslie M. Wilson of Gaithersburg, and Sharon E. Watson of Johnson City, Tenn.; a son, Robert A. of San Francisco; a sister, Josephine Schachtman of Orlando, Fla., and a granddaughter.