Zhang Xu (Chinese: 张煦; 6 November 1913 – 12 September 2015) was a Chinese telecommunications engineer and academic who taught for more than five decades at Shanghai Jiao Tong University and the University of Electronic Science and Technology of China. He was the first professor in China to teach radio communications and played a major role in the development of fiber-optic communication in the country. He was elected an academician of the Chinese Academy of Sciences in 1980.