Civil society organizations (CSOs) in Caribbean countries have performed social service delivery and program implementation roles for many years. Using survey, interview, and document review techniques, this cross-national study explored the potential role of nonprofit, nongovernmental, and community-based organizations in regional integration and development. The study has found that Caribbean CSOs perform functions primarily in four areas – social services, community building, local economic development, and sustainable development – while aspiring to carry out more substantial development functions. Their role in development could encompass development planning, public-policy formulation, economic development promotion, and program/project implementation and evaluation. In this article, issues affecting the effectiveness of CSOs are identified and a remedial approach is recommended. The policy implications of a development role for the region’s CSOs are discussed.