In the early 1970s, scholars studying a variety of service organizations realized that beneficiaries were not only external stakeholders who received services but they were also important organizational actors whose participation in the organization affected the organization’s structure, functioning, and outcomes. Tracing these early observations, and the related concepts of coproduction, value cocreation, and partial membership, this article considers why these ideas have not been more central to nonprofit education and research. After offering likely explanations, the article reports results from a systematic literature review in three nonprofit journals. The results show that despite the limited attention to these ideas, research findings reveal that beneficiaries are important organizational actors, whose participation in the nonprofit matters for the work of staff, leaders, and ultimately for social impact. The article concludes with suggestions for bringing beneficiaries more centrally into nonprofit management research and education.