A. Marvin Braverman, 75, a Washington lawyer since 1946 who was active in civic and volunteer organizations, died of cancer Oct. 30 at his home in Washington.

Mr. Braverman was a past chairman of the U.S. National Commission for UNESCO, and was chairman of the State Department's overseas school advisory committee. He was a trustee of the Washington Hospital Center, the International Oceanographic Foundation in Miami, and the Jackson Laboratories in Bar Harbor, Maine.

He also had served on the local boards of the National Travelers Aid Society, the American Red Cross, and the Boy Scouts of America. He was a member of the American, District of Columbia, International, and Inter-American bar associations. He also belonged to the 1925 F Street Club, the Army & Navy Club, and the American Legion.

Mr. Braverman was a native of Cedar Rapids, Iowa. He was a 1929 graduate of Dartmouth College, and a 1932 graduate of Harvard University law school. After practicing in New York City, he moved to Washington in the 1930s.

Before World War II, he was an attorney with the Reconstruction Finance Corp., an assistant general counsel of the Defense Plant Corp., and an assistant to the administrator of the Civil Production Board. During the war, he served with the Navy and attained the rank of lieutenant commander. He had a private law practice in this city since 1946.

Survivors include his wife, the former Anne Moore Jones, and a sister, Eve Herrup, both of Washington.