Designed by the International Monetary Fund (IMF), MULTIMOD is a modern, dynamic, multi-country macro model of the world economy designed to study the transmission of shocks across countries as well as the short-run and medium-run consequences of alternative monetary and fiscal policies. Country sub-models include the seven largest industrial countries--Canada, France, Germany, Italy, Japan, the UK, and the US--and an aggregate grouping of fourteen smaller industrial nations. Full documentation of the MULTIMOD's current variant, the Mark III Econometric Model, and its sub-models, and downloading instructions are provided as well as a bibliography of articles that either explain Multimod, apply it, or are part of its technical implementation.