Abstract: The purpose of the study was to find out the effect of resistance training on leukocytes among netball players. To achieve this purpose of the study, thirty netball players who were attended the National Games camp held at Mar Baselios College of Engineering and Technology, Trivandrum. The selected subjects were aged between 18 to 22 years. They were divided into two equal groups of fifteen each, Group I underwent resistance training and Group II acted as control that did not participate in any special training apart from their regular curricular activities. The subjects were tested on selected criterion variable such as leukocytes prior to and immediately after the training period. The selected criterion variable such as leukocytes was determined through Neubeaurs Haemocytometer. The analysis of covariance (ANCOVA) was used to find out the significant differences if any, between the experimental group and control group on selected criterion variable. In all the cases, 0.05 level of confidence was fixed to test the significance, which was considered as an appropriate. The result of the present study has revealed that there was a significant difference among the experimental and control group on leukocytes.