This volume features substantive biographical essays on 59 women from around the world who have made significant contributions to mathematics from antiquity to the present. Designed for secondary school students and the general public, each profile describes major life events, obstacles faced and overcome, educational and career milestones--including a discussion of mathematical research in non-technical terms--and interests outside of mathematics. Although the collection includes historical women, the emphasis is on contemporary mathematicians, many of whom have not been profiled in any previous work. Also included are the contributions of minority women, including 10 African-American, Latina, and Asian mathematicians.