AAUW (formerly known as he American Association of University Women) offers Dissertation Fellowships.
From their website:
"Dissertation Fellowships are available to women who will complete their dissertation writing between April 15, 2011 and June 30, 2011. Degree conferral must be between April 1 and September 15, 2011. To qualify, applicants must have completed all course work, passed all required preliminary examinations, and received approval for their research proposal or plan by Nov. 15, 2009. Students holding any fellowship for writing a dissertation in the year prior to the AAUW fellowship year are not eligible. Open to applicants in all fields of study. Scholars engaged in science, technology, engineering and math and also researching gender issues are especially encouraged to apply."