Yingjie Jay Guo (born 1958) is a communications engineer in Australia, specialising in antennas, wireless and broadband communications research. He is an adjunct professor at the University of New South Wales, and at Macquarie University in Sydney, and director of the Wireless Technologies Laboratory at the Commonwealth Scientific and Industrial Research Organisation. He is a recipient of Australia Engineering Innovation Award (2012), Australia Engineering Excellence Award (2007), and CSIRO Chairman's Medal (2007 and 2012). He has a BSc (1982) and master's degree (1984) from Xidian University, and a PhD (1987) from Xian Jiaotong University.