Katrin Wehrheim (born 1974) is an associate professor of mathematics at the University of California, Berkeley.

Wehrheim's research centers around symplectic topology and gauge theory, and they are known for work on pseudoholomorphic quilts.

After almost dropping out to become an Olympic rower, Wehrheim completed their PhD in 2002, under the joint supervision of Dusa McDuff and Dietmar Salamon.

[7] Wehrheim's PhD thesis in mathematics Anti-Self-Dual Instantons with Lagrangian Boundary Conditions won the 2002 ETH medal.

[3] In 2010, Wehrheim received the Presidential Career Award PECASE from Barack Obama in a ceremony at the White House.