**Andrea Louise Bertozzi** (born 1965) is an American mathematician. Her research interests are in non-linear partial differential equations and applied mathematics.

She earned her bachelor's and master's degrees from Princeton University, followed by her PhD from Princeton in 1991; her dissertation was titled *Existence, Uniqueness, and a Characterization of Solutions to the Contour Dynamics Equation*. Prior to joining UCLA in 2003, Bertozzi was an L. E. Dickson Instructor at the University of Chicago, and then Professor of Mathematics and Physics at Duke University. At the University of Chicago she first began to study the mathematics of thin films. She spent one year at Argonne National Laboratory as the Maria Goeppert-Mayer Distinguished Scholar. She coauthored the book *Vorticity and Incompressible Flow*, which was published in 2000.

She is a member of the faculty of the University of California, Los Angeles, as a Professor of Mathematics and Director of Applied Mathematics. There, among other things, she has worked with Jeffrey Brantingham and other colleagues to apply mathematics to the patterns of urban crime, research which was the cover feature in the March 2, 2010 issue of Proceedings of the National Academy of Sciences. Bertozzi also spoke about the mathematics of crime at the 2010 annual meeting of the American Association for the Advancement of Science.

She is the older sister of the chemist Carolyn Bertozzi. Her father, William Bertozzi, was a professor of physics at the Massachusetts Institute of Technology.

In 1995 Bertozzi received a research fellowship from the Sloan Foundation. In 1996 she received the Presidential Early Career Award for Scientists and Engineers from the U.S. Office of Naval Research. She is featured in the book *Encyclopedia of World Scientists*, by Elizabeth H. Oakes, published in 2007. She was also awarded the 2009 Association for Women in Mathematics-Society for Industrial and Applied Mathematics Sonia Kovalevsky Lecture, and was elected a Society for Industrial and Applied Mathematics Fellow in 2010.

In 2010 she was elected to the American Academy of Arts and Sciences. In 2012 she became a fellow of the American Mathematical Society. In 2013 she was named the Betsy Wood Knapp Chair for Innovation and Creativity at UCLA. In 2014 she won a SIAM Outstanding Paper Prize (joint with Arjuna Flenner). In 2016 she became a Fellow of the American Physical Society. In 2015 and 2016 she was named a Thomson-Reuters/Clarivate Analytics 'highly cited' researcher. In 2017 she became a Simons Investigator.