Raoul Blumberg, 75, an executive of The Washington Post who retired in 1968 after 33 years of service to this newspaper, died Dec. 24 at the Los Robles Medical Center in Thousand Oaks, Calif., after a heart attack.

Mr. Blumberg lived in Bethesda and was visiting members of his family when he was stricken.

In the course of his career at The Post, Mr. Blumberg worked on the circulation staff, rose to promotion manager, directed promotion and research, headed retail advertising and supervised the personnel and public relations departments. He was assistant to the publisher at the time of his retirement.

Special projects on which he worked included TV Channels. He was general manager of that publication and vice president of TV Publications, Inc.

He was a founding member of the National Newspaper Personnel Association and the Newspaper Purchasing Executives Association. He was a former president of the National Newspaper Promotion Association, the Washington chapter of the American Marketing Association and the Advertising Club of Washington. He was a member of the Washington Board of Trade and the International Newspaper Advertising Executives.

Mr. Blumberg also was a member of the boards of the Health and Welfare Council, the Southeast Neighborhood House and the Metropolitan Police Boys and Girls Club. He was secretary of United Community Services and the Child Day Care Association. He was a member of the Montgomery County Symphony Orchestra, the Washington chapter of the American Cancer Society, the National Press and University clubs of Washington, the Overseas Press and Yale clubs of New York, and the Wa-Vi-Mar Fishing Club.

Mr. Blumberg was born in Hungary. He came to the United States in 1922 and grew up in Spokane, Wash. He was graduated from the Salt Lake Collegiate Institute, now Westminster College, which conferred on him an honorary doctorate in literature in 1966, and Yale University. He moved to Washington in 1933 and worked for the old Washington Daily News before joining The Post in 1935.

Survivors include his wife, Margaret, of Bethesda; two daughters, Elizabeth Hubbarth of Thousand Oaks, and Dr. Margaret Wireman of Washington, and four grandchildren.