Adrian S. Fisher, 69, an attorney, federal official and educator who served as deputy director of the Arms Control and Disarmament Agency and dean of the Georgetown University Law Center, died of cancer yesterday at his home in Washington.

As a young lawyer, Mr. Fisher was a law clerk to Supreme Court justices Louis D. Brandeis and Felix Frankfurter. During World War II, he was a navigator in the Army Air Forces. In the 1940s and early 1950s, he held several high posts in the War and State departments. He was an associate of the law firm of Covington & Burling here, and in 1955, became vice president and general counsel of The Washington Post Co.

He helped draft the legislation that established the Arms Control and Disarmament Agency in 1961 and was named its deputy director by President John F. Kennedy. He played a leading role in the negotiation of the Nuclear Test Ban Agreement between the United States and the Soviet Union in 1963 and in the Nuclear Nonproliferation Agreement of 1968.

In 1969, he was named dean of the Georgetown law school, where he had taught international law and international trade for many years. In 1975, he was appointed Francis Cabell Brown Professor of International Law at Georgetown, a position that allowed him to teach full time.

In 1977, he returned to government service under President Jimmy Carter as ambassador to the Conference of Commissioners on Disarmament in Geneva. In 1979, he went back to Georgetown. At the time of his death he was a law professor at George Mason University.

Mr. Fisher was born in Memphis, Tenn., and reared in Washington. He attended St. Alban's School and graduated from The Choate School in Wallingford, Conn. He did his undergraduate work at Princeton, where he played football, and received his law degree from Harvard, where he was a member of the Law Review. He had a preference for doing things without benefit of the limelight, and a self-effacing manner that belied his nickname, "Butch."

When Mr. Fisher left the Arms Control and Disarmament Agency in 1969, an editorial in The Washington Post described him as "one of those votaries of the law, more interested in principle than in profit, on whom government and nations depend for selfless and indispensable service."

Mr. Fisher is survived by his wife, the former Laura Graham, of Washington, and two daughters, Laura Donelson Chandler, of Bethesda, and Louise Sanford Fisher of Pinecliff, Colo.