The slow global response to the Ebola crisis in west Africa suggests that important gaps exist in donor financing for key global functions, such as support for health research and development for diseases of poverty and strengthening of outbreak preparedness. In this Health Policy, we use the International Development Statistics databases to quantify donor support for such functions. We classify donor funding for health into aid for global functions (provision of global public goods, management of cross-border externalities, and fostering of leadership and stewardship) versus country-specific aid. We use a new measure of donor funding that combines official development assistance (ODA) for health with additional donor spending on research and development (R&D) for diseases of poverty.