Harry W. Fox, 65, retired chemistry program director with the Office of Naval Research and former senior chemist with the Naval Research Laboratory, died Friday at Fauquier Hospital in Warrenton, Va., of injuries received in an automobile accident.

Mr. Fox, a passenger in the car, was traveling to Orkney Springs, Va., to attend a retreat sponsored by Temple Micah when the accident occurred on Rte. 55 near Marshall, Va. He died two hour later.

Mr. Fox, a native of New York City, was graduated from Massachusetts Institute of Technology in 1934. He later received his master's degree from Boston University. When he moved to Washington in 1942, he joined the Naval Research Laboratory as a senior chemist and remained there until 1955.

He then joined the chemistry program of the Office of Naval Research, eventually becoming its directory before retiring in 1972.

He was one of the oldest members of Temple Micah, joining the congregration in Southwest Washington in the early 1960s. He was a member of the board, chairman of the adult education committee, and a former vice president of the temple. Mr. Fox was a former member of the Washington chapter of the American Technion Society.

Survivors include his brother, Bernard H., of Arlington, and a sister, Ruth Kreisman, of Malden, Mass.

The family suggests that expressions of sympathy be in the form of contributions to Temple Micah.