This article describes a stage-based model of leadership identity development (LID) that resulted from a grounded theory study on developing a leadership identity (Komives, Owen, Longerbeam, Mainella, & Osteen, 2005). The LID model expands on the leadership identity stages, integrates the categories of the grounded theory into the LID model, and develops how the categories of the theory change across stages of the model. The model has implications for working with individuals as they develop their leadership identity and for facilitating groups as they develop empowering environments for shared leadership. Connections to related scholarship and stage-based implications for practice are explored. (Contains 1 figure.)