Today, I came across a brief list of five women in history of science who were denied scientific glory due to gender discrimination: http://www.newscientist.com/gallery/unsung-heroines
I also like to add Emmy Noether to the list. She made a lot of different contribution in mathematical physics. In particular, in here early work, she made a beautiful connection between conserved quantities and underlying symmetry. I am pretty sure many of us know one or two examples of influential women in our field, who went unnoticed in the course of history. Salute to the all men and women who went unnoticed due to their gender, race, or religion.