This study was conducted under Cumra ecological conditions between 2019 and 2020 in order to determine the performance of some KWS hybrid corn varieties (V1; Kerbanis, V2; Kefieros, V3; Kontigos, V4; Kefrancos, V5; 2572) belonging to different maturity groups. When the results obtained in both years of the study were evaluated together, it was seen that the highest leaf number, grain protein content, and the lowest stalk lodging values were obtained from the V3 variety. The highest first ear height and thousand grain weight values were obtained from the V2, V4, and V5 varieties. The highest ear weight and grain weight per ear values were obtained from the V2 and V5 varieties. The highest grain ear ratio, hectoliter, and the lowest grain moisture values were obtained from the V1 variety. The highest plant height, number of grains per ear, tasseling stage, ear length, ear diameter, stalk lodging, and grain moisture values were obtained from the V5 variety. However, obtaining the highest stalk lodging and grain moisture values from this variety in both research years eliminated the other positive characteristics of this variety. The highest grain yield values were obtained from the V2 variety. When the evaluation is done by taking into account the highest grain yield, lowest grain moisture, and stalk lodging values together, it is seen that the V3 variety is of a nature that can be recommended for Cumra-Konya ecological conditions.