Globalization poses significant challenges and chances for societies throughout the world. Organizations must deal with the cultural diversity of their employees and integrate measures to work together effectively. As a result, diversity management with the integration of diversity competences and diversity-oriented leadership is becoming increasingly important. In this chapter, the relevance of these measures is theorized and discussed from a psychological point of view. Especially, a perspective and research for Germany are highlighted, as Germany counts as a global player and a migration country which is facing respective challenges. Firstly, the importance of diversity competences for companies is outlined, including mechanisms of discrimination and individual-oriented theories. Furthermore, considering theories of leadership personality, the dark triad and interplays between intercultural leadership and intercultural sensibility are illustrated. Accordingly, successful leadership in intercultural contexts is discussed, followed by conclusive thoughts and implications of the chapter. It is emphasized that successful diversity management as well as team-oriented and charismatic leading approaches contribute to better general organizational outcomes.