John Haskell Hooks Jr., 57, a systems analyst and computer specialist at the Department of the Army until his retirement in April for reasons of health, died of cancer Tuesday at Howard University Hospital.

Mr. Hooks was born in Kansas City, Mo. He later moved to California and graduated from the University of Southern California. He was a public relations officer for the Los Angeles County government before moving to Washington in the late 1950s.

Mr. Hooks began his career with the Department of the Army at the time he moved here.

During World War II, he served in the Army infantry in the Pacific. He became a second lieutenant and earned the Bronze Star and the Soldier's Medal. He remained in the Army Reserves after the war and was a lieutenant colonel at the time he retired in 1968.

Mr. Hooks was a member of the Reserve Officers Association, the USC Alumni Association and the USC Trojan Club. He also was a Mason.

Survivors include his wife, Gloria, of the home in Washington, with whom he had six children, John, David, Steven, Glory, Carol Ann and Margaret, all of the home; two children by a previous marriage which ended in divorce, John Ollie Hooks and Carolyn Wilson, both of Los Angeles; a son by a second marriage which ended in divorce, Haskell Hooks, of Phoenix, Ariz.; a brother, Williams, of Chicago; a sister, Gloria Revels, of Los Angeles, and five grandchildren. CAPTION: Picture, JOHN HASKELL HOOKS JR.