Nineteen inbred lines of white maize divered from S₅ generation at Sakha Agricultural Research Station were crossed with two inbred lines as testers in 2014 summer season. The 38 topcrosses were evaluated at Sakha and Mallawy Research Stations during summer season 2015 for eight studied traits, namely days to 50% silking, plant and ear heights, grain yield (ton/ha) adjusted on 15.5% grain moisture content, ear length (cm), ear diameter (cm), number of rows per ear and number of kernels per row. Mean squares due to lines , testers and line×tester were highly significant for most traits. While the interaction between lines, testers and locations were not significant for most traits. One topcross Sk5002/9×Sk13 (14.5 ton/ha) outyielded the check SC128 (13.2 ton/ha), also 13 topcrosses outyielded significantly the single cross SC10. These crosses could be used in  the maize breeding program in the future. Highly significant and desirable GCA effects were exhibited in Sk5001/2, Sk5002/9, Sk5002/10, Sk5002/11 and Sk5003/15 inbred lines for grain yield. Generally these inbred lines could be used in future stage of evaluation in the maize breeding program.