Numerous of studies in recent years have focused attention on the determinants of capitalrnflight in the developing countries. This paper contributed to this body of knowledge byrnfilling a noticeable gap. Principally, this paper examines the determinant of capital flightrnfrom 13 member countries of COMESA for the period 1990-2009.rnThe paper employed first difference General Method of Momentum (GMM) and systemrnGMM to find out the determinant of capital flight from COMES A member countries. Thernstudy found that capital flight has a tendency to persist over time, which may reflect thatrnhabit-formation effect or contagion effect. The study also found that Foreign DirectrnInvestment (FDI) has a positive and significant effect which may reflect existence ofrndiscriminatory-treatment for domestic investors. Capital flight from COMESA memberrncountries is also fueled by the increase of Gross Domestic Product of the country whichrnmay reflect money laundering and a high return for investment in the foreign countryrnparticularly in advanced countries. Furthermore the study found that budget deficit has arnnegative impact on capital flight which may reflect that con-tilted government officialsrnare the main actors of capital flight from COMESA member countries. The studyrnsuggested the need for the policy makers to adopt an investment policy which doesn'trndiscriminate fore ign investor from the domestic investors, adjusting the domestic interestrnrate in accordance with the international market and apply tight control on corruptedrngovernment officials to repatriate capital flight from COMESA member countries.