This study reviews: (1) how levels of donor financing of the health sector in Somalia varied over the decade 2000-09, (2) which health interventions were prioritized by donors, and (3) how evenly health sector aid was distributed to the different zones of Somalia. The overall aim of the study was to create evidence for donors, implementers, and health specialists involved in allocation of financial resources to the Somalia health sector. The results of the study are based on quantitative data collected from 38 Development Assistance Committee (DAC) donors and implementing agencies active in Somalia. Quantitative data were collected between March and May 2007 and in March 2010, with response rates of 96 and 95 percent, respectively. The report is organized in five chapters. Chapter one provides the background to the study, along with its aims and objectives, and contextualizes the study area, Somalia. Chapter two provides the conceptual framework for the research by looking at aid financing trends in developing countries, in the health sector, in fragile states, and in Somalia. Chapter three describes the methodology, the data collection process, types of data collected, and methodological limitations. Chapter four presents the quantitative findings in terms of total health sector aid financing, and expenditure by disease and by zone. Chapter five offers conclusions linked to the four primary study objectives and provides recommendations for future funding.