In order to determine the most suitable cultivar and nitrogen level on yield and yield components Barley cultivars, an experiment was conducted at Saveh Azad University of Technology Research farm in years 2007-2008. The experiment was arranged in a split-plot design with four replication. Four levels of nitrogen(10,60 ,80,100 kg/ha) were the mine plot and subplot were two cultivar. Seeds of two barley cultivars ( Valfajr and Reyhan) were sown with four nitrogen treatments (N10,N60,N80,N100) most of the yield and yield components were significantly highest in N(80kg /ha). Among the cultivars most of the characters showed their highest values in Valfajr and the lowest in Reyhan.