This document discusses various theories and models of leadership and organizational culture. It begins by defining leadership in different ways and describing early trait models. It then summarizes Fiedler's contingency theory, path-goal theory, the Vroom-Yetton decision model, the Hersey-Blanchard life-cycle model, attribution models, and leader-member exchange theory. Later sections cover charismatic leadership, transformational leadership, organizational culture, and strategies for leading cultural development. It concludes by discussing leadership and management in public organizations.