Main focus of this paper is placed on team creativity. In order for an organization to remain competitive, team creativity level should be controlled to stay higher than an average level that rival companies are believed to show. Beyond managers' control, we emphasize a voluntarily and informally emergent structure and introduce a social network perspective within team creativity. Since a team is composed of individual members, and a certain kind of leadership and trust exist in the team to affect team creativity, it is necessary to investigate relationships between leadership, trust and team creativity in a rigorous way. In this sense, we propose a team creativity model in which shared leadership, interpersonal trust (affect-based trust and cognitionbased trust), and knowledge-sharing are included and their subsequent influence on team creativity is analyzed. For the sake of empirical analysis, an e-learning course was administered in a private university, and 40 teams were organized for this study. 249 valid questionnaires were garnered, and analyzed by structural equation model. Results show that shared leadership, knowledge sharing and cognition-based trust significantly influence team creativity.