The First West Lake Workshop on Target Tracking and Information Fusion was held in Hangzhou, Zhejiang, China at the Zhejiang Hotel, May 28–30, 2018. The Workshop was sponsored jointly by the Information Fusion Branch of Chinese Society of Aeronautics and Astronautics and the Hangzhou Dianzi University (HDU) and it was organized by the HDU School of Automation through the Overseas Expertise Introduction Center for Discipline Innovation (111 Center) in Perception and Control of Cyber-Physical Systems and the Fundamental Science on Communication Information Transmission and Fusion Technology Laboratory. Nearly 100 participants from industry, research institutes, and academia from seven countries and four continents attended this event.