Robin J. Clack, 64, retired head of the U.S. Border Patrol and a resident of Lanham for the last 22 years, died Sept. 5 in a hospital in Cortland, N.Y., as a result of injuries he suffered in an automobile accident earlier that day.

A spokesman for the Cortland County district attorney's office said Mr. Clack was driving a car that collided with a van in Scott, N.Y.

Mr. Clack and his wife, the former Waltereena Russell, were in New York to attend a wedding. Mrs. Clack was riding in their car and was treated at the hospital in Cortland and released.

Mr. Clack began his career with the U.S. Border Patrol, a branch of the Immigration and Naturalization Service, as a patrolman in Laredo, Tex., in 1942. He was director of the Border Patrol Academy at El Paso, Tex., for two years before being assigned to the agency's headquarters in Washington in 1959.

He rose to the post of assistant commissioner of the Immigration and Naturalization Service and head of the Border Patrol in 1975. He held that position until retiring in December 1977. He returned to the service for six months as its associate commissioner before retiring a second time in 1978.

Mr. Clack was a moderator of the First Baptist Church in Washington and a member of the College Park Rotary Club.

Mr. Clack was a native of Abilene, Tex., and a 1938 graduate of Hardin-Simmons University there. He was a high school principal and football coach in Texas before joining the Border Patrol. He served with the Army in World War II.

In addition to his wife of 32 years, of Lanham, Mr. Clack's survivors include three daughters, Catherine A. Clack of Baltimore, Dr. Barbara Stahly of Baton Rouge, La., and Nancy Clack of Lanham, and a brother, Wylie U. Clack of Dallas.

The family suggests that expressions of sympathy be in the form of contributions to the R.J. Clack Organ Fund, The Baptist Church of the Redeemer, 12506 Union Rd., Knoxville, Tenn., 37922.