The application of biocatalytic or chemoenzymatic techniquesi ns ilicon chemistry serves two roles:i tp rovides ag reater understanding of the processing of silicon species by natural systems, such as plants, diatoms, and sponges, as well openingu pa venues to green methodologies in the field. In the latter case, biocatalytic approaches have been applied to the synthesis of small-molecule systems and polymeric materials. Often these biocatalytic approaches allow access to molecular structures under mild conditions and, in some cases, molecular structures that are not accessible throught raditional chemical methodologies. Ar eview of recent advances in the applications of biocatalysis in silicon chemistry is presented.