Katherine Birgitta Whaley (born 1956) is a Professor of Chemistry at the University of California Berkeley and a senior faculty scientist in the Division of Chemical Sciences at Lawrence Berkeley National Laboratory. At UC Berkeley, Whaley is the Director of the Berkeley Quantum Information and Computation Center, a member of the executive board for the Center for Quantum Coherent Science, and a member of the Kavli Energy Nanosciences Institute. At Lawrence Berkeley National Laboratory, Whaley is a member of the Quantum Algorithms Team for Chemical Sciences in the research area of resource-efficient algorithms.