This study examines the growth of the academic study of the formal nonprofit sector by focusing on dissertations and theses written between 1986 through 2010. Using a keyword search, we find and examine 3,790 abstracts available in the ProQuest Dissertation and Theses database. There has been a growing number of theses and dissertations since 1986; the majority (80.2%) were completed at schools in the United States. Thematic analysis found five main themes: (a) Resources (human and financial); (b) Organizational effectiveness and performance; (c) Organization development (context, processes, and culture); (d) Intra-organizational context (leadership, structure, etc.); and (e) Interaction and collaboration (with other organizations, government, etc.). Findings demonstrate an emerging interdisciplinary field in the study of the formal nonprofit sector. Trends across the 25-year time span relating to country of origin, theme, and subject are explored and discussed.