Sun-Yung Alice Chang (Chinese: 張聖容; pinyin: Zhāng Shèngróng, Hakka: Chông Sṳn-yùng, [t͡soŋ sɨn juŋ]; born 1948) is a Taiwanese-American mathematician specializing in aspects of mathematical analysis ranging from harmonic analysis and partial differential equations to differential geometry.

[3] Chang's research interests include the study of geometric types of nonlinear partial differential equations and problems in isospectral geometry.

Working with her husband Paul Yang and others, she produced contributions to differential equations in relation to geometry and topology.

In 2004,[5] she was interviewed by Yu Kiang Leong for Creative Minds, Charmed Lives: Interviews at Institute for Mathematical Sciences, National University of Singapore, and she declared:«In the mathematical community, we should leave room for people who want to do work in their own way.

[6]Chang's life was profiled in the 2017 documentary film Girls who fell in love with Math.