Dr. Harold W. Brooks, 64, a retired plastic surgeon, died of cancer Wednesday at his home in Chestertown, Md.

Dr. Brooks, who had lived in Chestertown since 1976, practiced at the Kent-Queen Anne's Hospital there until his retirement two years ago for reasons of health.

He was born in Paterson, N.J., and graduated from Oberlin College in Ohio. He earned a medical degree at the University of Rochester in New York. During World War II, he was a captain in the Army Medical Corps and served in England.

After the war, he practiced in Raton, N.M., and then in Wichita, Kan. In 1962, he was a Fullbright professor in India. In 1964 and 1965, he was a professor for Project Hope in Trujillo, Peru. He then lived and practiced in Danville, Pa., until moving to Chestertown.

Dr. Brooks was a diplomate of the American College of Plastic and Reconstructive Surgery.

Survivors include his wife, Anne, of Chestertown; four daughters, Penelope McDonough of Kleena Kleene, British Columibia; Patricia Mulvany of indianapolis, Barbara Wood of Wheaton, and Catherine Brooks of Chestertown; one son, Richard, of Wilmington, Del.; two sisters, Jeanne Carritt of Amherst, Mass., and Mildred Diegel of Haworth, N.J., and eight grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to Kent-Queen Anne's Hospital, Chestertown, Md., 21620.