A study to assess the effectiveness of training programme on motor skills among intellectually challenged children in selected rehabilitation centers in Coimbatore. The objectives are to assess level of motor skills among intellectually challenged children in experimental group and control group, to provide training on motor skills among intellectually challenged children in experimental group, to assess the effectiveness on level of motor skills among intellectually challenged children in experimental group, to compare the level of motor skills in experimental group and control group, to find out association between the level of motor skills among intellectually challenged children with their selected demographic variables. The study was quasi-experimental study with an evaluative approach. The study was conducted in Ashwin and Bethel rehabilitation. Data collection period was two months. Population was intellectually challenged children. Purposive sampling technique was used. Sample size was 20 (10) children in each experimental and control group). The tools used for data collection were demographic variables and NIMH motor skill checklist. The effectiveness and comparison of motor skill score t- test value 2.05* was statistically significant in experimental group, in control group t test value was 0.18 not statistically significant. Hence HI hypotheses was accepted, shows that there is an effectiveness of training on motor skills among intellectually challenged children. The study shows there is a significant improvement in level of motor skills in experimental group after training