This technical note is an overview of mathematical modeling efforts in the Department of Energy Oil Shale Program and includes a bibliography of modeling related to oil shale processing. Process modeling is a tool employed by the Morgantown Energy Technology Center in their systems analysis approach to Oil Shale research management. Through a process of model development, empirical data generation, and cataloging, program managers are able to develop comprehensive overviews of their programs and redefine/redirect program efforts to more effectively reach their goals and objectives. Models covering rock fragmentation, void characterization (tracer studies), chemistry and physics of retorting, and more specialized areas have been developed by and are in use at several national laboratories government centers, and universities. The models are listed with observations regarding application, code language, ease of use, reliability, and documentation.