The development of leadership involves the identity of leader, which can be analyzed from different perspectives and theoretical approaches. One of them, and that used in this thesis, assumes the development of identity in social construction, that is, in the reflexivity of the individual and, above all, in constant interactions with others. For this perspective, they are central aspects to the development of the leader, the self-concept and the identity. Considering it is critical to understand how such a process occurs in leadership development contexts and assuming that contexts are fertile grounds for the leader s identity dynamics, this thesis aims to understand such dynamics in a context of coaching for leadership development. Since the phenomenon is little explored in the literature, we used the Grounded Theory method with a constructivist orientation, thus capturing the representations of coaches, leaders and interviewed followers. Based on the data analyzed, this thesis presents a theoretical framework that has been developed allowing to understand and explain the identity dynamics in the development of leaders, exploring elements at the intrapersonal, interpersonal and contextual levels.