Sarah J. Greenwald is professor of mathematics at Appalachian State University and faculty affiliate of gender, women's and sexuality studies.

Her thesis in Riemannian geometry was entitled Diameters of Spherical Alexandrov Spaces and Constant Curvature One Orbifolds and was supervised by Wolfgang Ziller[4] Greenwald is a professor of mathematics at Appalachian State University and faculty affiliate of the gender, women's and sexuality studies program there.

[6][7] Greenwald has also created a series of short video interviews of women in STEM who were former Girl Scout members.

[9] In 2017, Greenwald was selected as a plenary speaker at spring southeast section meeting of the MAA at Clemson University in March 2018.

[13] Greenwald co-edited with Jill Thomley the 3-volume Encyclopedia of Mathematics & Society,[14] which was named a "Best Reference of 2011" by Library Journal and was reviewed extensively.