The document summarizes the 2011 International Microwave Symposium (IMS2011) Student Design Competitions. There were six hardware design competitions sponsored by IEEE Microwave Theory and Technique Society technical committees: a power amplifier, low-noise amplifier, packaged triplexer, wideband balun, optical-to-microwave converter, and software-defined radio. Students were required to design, build, and test their entries. Winners were determined based on criteria such as efficiency, power output, and linearity. The event provided students an opportunity to exercise their design skills and compete with peers from around the world.