David Lansing Dill (born January 8, 1957) is a computer scientist and academic noted for contributions to formal verification, electronic voting security, and computational systems biology. In 2013, Dill was elected as a member into the National Academy of Engineering for the development of techniques to verify hardware, software, and electronic voting systems. He is the Donald E. Knuth Professor, Emeritus, in the School of Engineering and Professor, Emeritus, of Computer Science at Stanford University.