The production of tomatoes is seriously impeded by the ToLCV (tomato leaf curl virus). It belongs to the genus Begomovirus and family Geminiviridae. It is transmitted by whitefly (Bemisia tabaci). The virus causes stunted growth of the plants, reduction in the leaf size, upward curling of leaves, chlorosis on leaves and flowers. There may be up to 90% of yield losses due to this disease, which is serious in India. Host plant resistance is one of the best option to manage the disease economically and environment friendly. The progress on this aspect till date is six resistant genes (Ty-1, Ty-2, Ty-3, Ty-4, ty-5, Ty-6) have been identified and mapped on different chromosomes from the available resources the resistance breeding work for this disease in progress continuously. Among those 6 identified resistance genes, Ty-1 and Ty-2 genes express complete or nearly complete dominance, while Ty-3 shows partial dominance. These three genes mentioned above have been extensively used in resistance breeding programs to combat this virus.