The Alice T. Schafer Mathematics Prize was established by the Association for Women in Mathematics and is awarded annually to an undergraduate woman for excellence in Mathematics. The prize is presented each year at the Joint Mathematics Meeting. Information about this prize, including nomination procedures and a list of past winners, is posted here: https://awm-math.org/awards/schafer-prize-for-undergraduates/.
Nominations are open until October 1st and are collected via MathPrograms.org.