Frank J. Murphy Jr., 70, a retired builder and Realtor and the general chairman of several national golf tournaments at the Congressional Country Club, including two U.S. Opens, died of congestive heart failure Oct. 17 at the Manor Care nursing home in Arlington.

Mr. Murphy, who lived in McLean, was a governor of the Congressional Country Club and a member of the U.S. Golf Association. He was general chairman of the U.S. Open in 1964 and again in 1976. In 1959, he was chairman of the Women's National Amateur Tournament at Congressional.

He also had served as a special consultant to the Kemper Open golf tournaments that have been played at Congressional since 1980.

Mr. Murphy was born in Montreal. He grew up in Washington and graduated from McKinley Technical High School. He earned a degree in civil engineering at Catholic University. He was an officer in the Navy in World War II.

In 1936, he founded his own building and real estate firm, Frank J. Murphy Jr. Inc. He later added Murphy & Son. He operated these enterprises until 1967, when he sold them and retired.

Mr. Murphy was a director of the Soap Box Derby in Washington in 1948 and 1949. He also was a member of the Thad Dulin Post No. 59 of the American Legion.

Survivors include his wife, the former Margaret Smith, of Mclean; two children, Frank J. III, of McLean, and Elizabeth Yates of Annandale; two sisters, Helen Boyle of Wheaton, and Annette Ward of Virginia Beach, Va., and six grandchildren.