This study aims to determine the effect of playing basketball and soccer as well as body weight on the VO2max of children with mild intellectual disabilities. This research is an experimental research. This study uses body mass index to determine the anthropometric characteristics of body weight and the Rockport Walking Test to measure VO2max in 24 children with mild intellectual disabilities with an age range of 13-15 years as subjects in this study. Subjects were divided into 4 groups (basketball-normal weight, basketball-overweight, soccer-normal weight and soccer-overweight). The treatment was given 16 times, 3 times a week using basketball and soccer games. The research data were analyzed using one-way ANOVA. Based on the results of the research and the results of data analysis that has been carried out, the following conclusions are obtained: (1) There is a significant difference in the effect between the basketball game group with excess weight, the soccer game group with normal weight and the soccer group with excess weight. On the VO2max of children with mild intellectual disabilities to the VO2max of children with mild intellectual disabilities (p= 0.00 > 0.05). (2) The soccer game group with normal weight had the highest effectiveness in increasing the VO2max of children with mild intellectual disabilities.