While recent scholarship emphasizes the potential role of shared leadership as a viable alternative to help address existing challenges in the Sport for Development and Peace sector, limited attention has been given to understanding how and when shared leadership can be developed. Therefore, the purpose of this study was to explore antecedents of shared leadership based on practitioners’ lived experiences within multiorganizational collaboratives. A total of 30 practitioners involved in two multiorganizational Sport for Development and Peace collaboratives was interviewed. Data were analyzed through a two-cycle coding process. Four themes were identified, including (a) strategic planning, (b) support from vertical leaders, (c) shared events, and (d) personal characteristics of members as critical antecedents of shared leadership. The findings of this study provide a foundation for refining shared leadership theory. Additionally, the findings also allow for the identification of field-sensitive strategies practitioners can implement to develop environments more conducive to shared leadership development.