Network science has a rich history, tracing its roots back through sociology, physics, biology, electrical engineering, computer science, and topology all the way to Euler and the Königsberg bridges nearly 300 years ago. Network science is concerned with the structure and dynamics of graphs (and generalizations of graphs), dynamical processes on such graphs, and the design and analysis algorithms that compute with and on them. The goal of the SIAM Network Science workshop is to promote cross-fertilization among the communities that study and apply networks, both inside and outside SIAM. This workshop is co-located with the 2017 SIAM Annual Meeting (AN17), July 10-14, SIAM Conference on Industrial and Applied Geometry (GD17), July 10-12, and the SIAM Conference on Control and Its Applications (CT17), July 10-12, and the SIAM Workshop on Parameter Space Dimension Reduction (DR17), July 9-10.