This is a survey of a variety of interconnection networks for reconfigurable parallel processing systems that have appeared in the literature. A system is reconfigurable if it may assume several architectural configurations, each of which is characterized by its own topology of activated interconnections between modules. 18 The systems whose networks will be examined include multiple-SIMD and MIMD systems, as well as both fixed and dynamic word size systems. This paper is restricted to networks for geographically-localized parallel processing systems using 12 or more processors in a reconfigurable manner. Related survey papers include References 1 , 3 , 10 , 19 , 20 , 45 - 47 .