 This study evaluated the accuracy of the moderate-resolution imaging spectroradiometer, MODIS, evapotranspiration, ET, product against eddy covariance, EC, measurements in two ecosystems in South Africa. The MODIS-ET product was found to be inconsistent with EC measurements in both sites, indicating that further research is needed to improve the accuracy of the MODIS-ET product for use in South Africa. This article was authored by Abel Romillo, Nabil Majozi, Rino Matthew, and others.