Passion is at the core of entrepreneurship and new venture creation (Cardon et al., 2009). Notwithstanding the insights from existing studies (Gielnik et al., 2015; Murnieks et al., 2014), a neglected issue involves examining entrepreneurial passion at the team level. Our study responds to the call for empirical studies that illuminate the functional role of team entrepreneurial passion (Cardon et al., 2013, 2016; Drnovsek et al., 2009). We focus on the diversity in entrepreneurial passion among members, and subsequent implications on team performance over time. We also examine the moderating effect of team reflexivity (Dreu, 2002), defined as the process of reflecting and discussing team goals, functions, and strategies among members (West, 2002, 1996) on how entrepreneurial passion diversity shapes new venture team performance over time.