Robert T. Murphy, 51, a revenue sharing specialist with the Treasury Department who earlier had worked for the Agency for International Development and the Commerce Department, died of cancer Nov. 22 at Suburban Hospital in Bethesda.

Mr. Murphy had been with Treasury since 1973 and his job was to act as a contact between the department's revenue sharing office and its office of state and local finance.

He began his government career as a State Department officer in Egypt and the Sudan from 1952 and 1956. He then worked for the National Council of Catholic Bishops in Washington until joining AID, where he specialized in the Middle East and Latin America. He later worked for the Commerce Department.

Mr. Murphy was born in Hartford, Conn. He earned a bachelor's degree in 1949 from Boston University and in 1951 earned a master's degree in international affairs at Harvard University. He earned a doctor's degree in political science from Harvard in 1958.

In 1969, he earned a Department of Commerce commendation.

Mr. Murphy, who lived in Bethesda, was a member of the John Carroll Society and Our Lady of Lourdes Catholic Church. He was active in the Confraternity of Christian Doctrine and in the Boy Scouts of America.

Survivors include his wife, Patricia, and five children, Thomas, Daniel, Mary Carol, Michael and Robert, all of the home in Bethesda, and a brother, Allen, of Hartford.