Association for Women in Mathematics http://www.awm-math.org/
A nonprofit organization dedicated to encouraging and promoting women and girls in the mathematical sciences including pure and applied mathematics and statistics. Site has newsletters, events and resources including job adverts.
Undergraduate Women in Mathematics http://www.math.unl.edu/~ncuwm/
Annual conference giving undergraduate women the opportunity to discuss their own research and to meet other women who share their interest in the mathematical sciences. Next meeting: Lincoln, Nebraska, USA; 4--6 February 2005.