The main goal of the third edition of HiPINEB is to gather and discuss in a full-day event the latest and most prominent efforts and advances, both from industry and academia, in the design and development of scalable high-performance interconnection networks, especially those oriented to meet the Exascale challenge and Big-data demands. Topics of interest include Interconnect architectures and network technologies for high-speed, low-latency interconnects, routing algorithms, network communications models, modeling, communications, and much more. Learn more at http://hipineb.i3a.info/hipineb2017/