Clara Harrison Stranahan (April 9, 1831 – January 22, 1905) was an American author and Barnard college founder.
Long identified with the higher education of women in the United States, she was at one time called "the best educated woman in the United States." She taught in Troy, Ohio and in Brooklyn, New York, and donated US$25,000 to University of Michigan as a memorial of her father, Seth Harrison.
Stranahan was the founder and a trustee of Barnard College.
She was a frequent contributor to magazines and other periodicals, and was the author of a work upon French painting.
Stranahan was vice-president of the Emma Willard Association, composed of alumnae of the Troy Female Seminary, and a member of the Daughters of the American Revolution.