This document discusses country ownership and organizational capacity building in the context of HIV/AIDS programs. It defines country ownership as the full participation of a country's population, including government, civil society, and the private sector, in conceptualizing, implementing, monitoring, and evaluating development policies and programs. While country ownership is not a new concept, challenges remain in achieving it in practice. The document argues that capacity building of both government institutions and civil society organizations is needed to strengthen local leadership and sustainability of HIV/AIDS responses over the long term. It provides examples of how capacity building initiatives have supported greater country ownership in various country contexts.