The purpose of this mixed-methods study was to examine how college students define the concept of leadership and to identify gender, racial, and age differences within these definitions. Participants were 1100 undergraduate students drawn from a national sample. Participants were asked to detail their definitions of leadership, which were analyzed using thematic content analysis. The definitional themes served as dependent variables in determining differences by gender, race, and age. Ten leadership themes describing the relationship between the leader and followers, leader characteristics, and leadership outcomes were identified, and the frequency of themes reflected fairly hierarchical perceptions of leadership. Findings by gender, race, and age emerged for nine of the ten themes. More contemporary understandings of leadership were demonstrated by women than by men, and the interaction of gender and age for three themes suggested more contemporary understandings of leadership for traditionally-aged students than non-traditionally aged students. (Contains 8 tables.)