In order to up-date the status of the resistance of malaria vectors to insecticides, as well as to establish base-line data for the susceptibility level of Anopheles sacharovi and An. pulcherrimus to malathion a series of susceptibility tests were carried out during March, April and May, 1978 in the southern, central and northern regions of Iraq. These studies showed that An. stephensi is resistant to malathion, An. sacharovi and An. pulcherrimus are susceptible to malathion, and their LT 95 to malathion 5.0% is estimated to be about 15 and 31 min. respectively. The last 2 species were found to be resistant to DDT.