This study introduces a new concept to the analysis of development aid. Aid is regarded as a global public good where donors benefit from the advantages of aid without rivalry and exludability. The public-goodnature of aid is a logical explanation for the deficiencies of the international aid regime, especially the suboptimal supply of aid and the free-riding of donors. The concept of aid as a public good raises the question whether there are any actors who could produce this global public good. The study analyses whether nongovernmental organizations are able to fill this gap in the international aid regime. The model is introduced through a case study: aid in Afghanistan in general, and the activities of the NGO Hungarian Baptist Aid in the country. Journal of Economic Literature (JEL) classifications: F590, H410