The document provides an overview of five popular organization design models: [1] McKinsey's 7S Model, [2] Galbraith's Star Model, [3] Weisbord Six Box Model, [4] Nadler and Tushman's Congruence Model, and [5] Burke-Litwin Model. Each model frames the key elements of an organization's design in a different way and has benefits and limitations for understanding an organization's structure. The document aims to help readers choose the right model for designing their own organization.