Helen Margaret Ranney (April 12, 1920 – April 5, 2010) was an American doctor and hematologist that researched sickle-cell anemia. Ranney was a faculty member and the first female head of the department of medicine at the University of California, San Diego School of Medicine. She attended medical school at Columbia University. In 1973, she was elected a member of the National Academy of Sciences and the Institute of Medicine. She was elected a Fellow of the American Academy of Arts and Sciences in 1975.
- Denise Gellene (April 14, 2010). "Helen Ranney, Pioneer in Sickle Cell Research, Dies at 89". The New York Times. Retrieved 30 November 2012.
- "Biography: Dr. Helen M. Ranney". Changing the face of medicine. U.S. National Library of Medicine National Institutes of Health. Retrieved 30 November 2012.
- "Helen M. Ranney". National Academy of Sciences. Retrieved July 26, 2014.
- "Directory: IOM Member - Helen M. Ranney, M.D.". Institute of Medicine. Retrieved July 26, 2014.
- "Book of Members, 1780–2010: Chapter R" (PDF). American Academy of Arts and Sciences. Retrieved July 29, 2014.
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