Photopolymerization offers many distinct advantages for cure of composite materials. Most notably, the spatial and temporal control of initiation afforded by the use of light rather than heat to initiate the reaction provides `cure on demand` which can be used to design improved composite systems and processes. In this review we examine the emerging field of photopolymerization of composites reinforced by glass, silica, and ceramic fibers or particles. We begin with a discussion of the unique issues associated with photocure of thick polymers and filled systems. Next we present an overview of recent developments in photopolymerization of glass fiber, silica, and ceramic filled composites in four emerging areas: durable goods, medical implants, microelectronic devices, and organic-inorganic hybrid polymers.