The thirteenth SLAC Summer Institute on Particle Physics was held July 29 to August 9, 1985. Three hundred nine physicists from 15 countries gathered to study the subject of Supersymmetry. The format of past Institutes was followed of having the first seven days as a Summer School and the last three as a Topical Conference. The school portion examined the theoretical basis for supersymmetry, recent developments in theories with compact dimensions, and experimental searches for supersymmetric signatures. Another series of lectures explored technologies for obtaining very high energy e+e- colliding beams. The topical conference was highlighted by reviews of searches for supersymmetric and other new particles, including the first results from the ASP experiment at PEP, and by the confirmation of the E(2200) state from the Mark III. Show Partial Abstract