Eighty sunflower inbred, almost all registered in Crop Science, U.S.A, as parental lines, were tested at Agricultural Research Centre, Islamabad, during the autumn season of 1990 for charcoal rot resistance.The lines were artificially inoculated with Macrophomina phascolina prepared on PDA by toothpick method when plants started flowering. Infection was measured on pith by splitting the stalk, near maturity, 35 days after infection. None of the line showcd resistance, however, differencs in infection volume exhibited relative susceptibility. Inbred lines HA-89, HA--224, HA-232, 1 1^-288 and HARI had less than 20 cm pith infection.