Twenty sunflower (Helianthus annuus L.) hybrids+OPV were evaluated for their resistance to leafblight and stem spot disease caused by Alternarirt helinnthi in the field under epiphytotic conditions at the National Agricultural Research Centre, Islamabad, during the autumn season, 1984. Only one hybrid, Suncross 25-3, was found significantly (P=0.05) highly resistant, 5 were moderately susceptible with non-significant differences in their reactions, and the remaining hybrids were either susceptible or highly susceptible to the disease.