Joseph Wang is an American researcher and inventor. He is Distinguished Professor, SAIC Endowed Chair, and former Chair of the Department of Nanoengineering at the University of California, San Diego specializing in nanomachines, biosensors, nanobioelectronics, wearable devices, and electrochemistry. He also serves as the Director of the Center for Wearable Sensors at the University of California San Diego Jacobs School of Engineering.