Ceramic-matrix composites are strong, tough, environmentally stable, light in weight, and have the ability to withstand high operating temperatures. These characteristics make them viable candidate materials for high temperature structural applications. Twenty three are included in this volume describing the latest developments in the areas of ceramic fibers, processing and fabrication, oxide and non-oxide composites, carbon-carbon composites, geopolymer composites, mechanical behavior, corrosion and environmental effects, characterization, fiber-matrix interface, design of composites, and thermal/environmental barrier coatings. Proceedings of the symposium held at the 105th Annual Meeting of The American Ceramic Society, April 27-30, in Nashville, Tennessee; Ceramic Transactions, Volume 153.