The International Symposium on Compound Semiconductors is the forum for science, technology and applications of compound semiconductors. ISCS-2011 addresses the physics, science, and applications of III-V and II-VI compound semiconductors as well as SiGe, SiC and related alloys. Papers are solicited on compound semiconductor-related topics, including: *Crystal growth and deposition techniques *Oxides and carbon related materials *Nanotechnologies and nanostructures *Physics, simulation and characterization *Light emitters and detectors *High frequency and high power electronics *Novel device concepts (spintronics, metamaterials, nanowires) *Sensors and actuators