Three experiments were conducted in three consecutive years at the Ribeirão Prêto Agricultural Experiment Station for studying the control of the tobacco thrips on peanut. The insecticides tested were Aldrim, DDT, Diazinon, Disiston, Endrim, EPN, Gusation, Rhodiatox, and Thimet. The results from the experiments indicated that all the insecticides tried were equally effective for the control of the insect. On the average the insecticidal treatments increased the yield 45 per cent.