Porous silicates are often used as catalysts or catalyst supports for many chemical reactions. The immobilization of metals by their incorporation into silicate frameworks is an important strategy for generating catalytically active sites. The catalytic properties of metal-modified porous silicates depend on the structure type and on the location and nature of the incorporated metal. Recently, manganese-containing porous silicates have received considerable attention as catalysts for various chemical conversions. Herein, an overview on the synthesis, structure characterization, and catalytic applications of manganese-containing porous silicates is presented. The particular suitability of these materials to address major challenges in environmentally benign catalysis is outlined.