A field experiment was conducted for two consecutive winter season during 2019/2020 and 2020/2021 in the Demonstration Farm of Faculty of Agriculture University of Kassala at New Halfa to investigate the effects of water stress on performance of three sunflower hybrids (Hysun 33= V1 cultivated a lot in the area, Panar = V2 cultivated since the last three years and Resarch =V3 new introduce hybrid). The experiment was laid out in RCBD as split-plot trail with three replicates. The water stress treatments were irrigation every 10 days (W1), skipping one irrigation at flowering stage(W2) and skipping one irrigation at seed filling stage (W3). The results showed that water stress significantly reduced LAI, shoot dry weight and yield attributes. The significant increase in the yield due to sowing V1 under frequent irrigation was associated with significant increase in the yield components (head diameter, No seeds per head, 100-seed weight, seed weight per head and seed yield per ha). Also, W1xV1 had positive effects on seed oil content. In conclusion, a large genetic variation was observed for seed yield and seed oil content under well watered and water deficit conditions.