Field experiments were carried out at the Agriculture Research and Experimental Center Faculty of Agriculture Moshtohor, Banha Univ. in 2008 and 2009 seasons to study the performance of 5 maize varieties i.e., ( S.C. Hitec, S.C.10, T.W.C Hitec, T.W.C 329 and Giza 2) under 4 irrigation levels (100% field capacity (I1), 80% field capacity (I2), 60 % field capacity (I3) and 40 % field capacity (I4)). A split plot arrangement of a randomized complete block design with three replications was used with irrigation levels as main plots and maize varieties as subplots The obtained results could be summarized as follows: single crosses of maize significantly surpassed other cross hybrids in growth characters, yield and yield components .Increasing irrigation levels from I3 (60 % of field capacity ) to I1 , (100 % of field capacity ) gives significant for growth, yield and yield components with insignificant differences between I1 ( 100% of field capacity ) and I2 ( 80 % of field capacity ).