The effect of feeding different levels of maize oil on performance of broiler chicks was studied. One-hundred and twenty one day-old, unsexed (Lohmann) broiler chicks were randomly divided into four experimental groups. Each group was further subdivided into five replicates at the rate of six chicks per pen in complete randomized design. The birds were fed on four levels of maize oil (0, 2, 4 and 6%) with constant level of dietary protein (22%) for 7-weeks duration. Health of the stock and performance parameters were recorded. At the end of the experiment, energy balance parameters and chemical composition data were measured and recorded. The results indicated that, weight gain, feed intake, feed efficiency, energy utilization percentage and carcass fat content of broiler chicks were significantly (P<0.01) affected by different levels of maize oil. Birds fed the high oil level 6% showed better results in body weight gain, feed efficiency, energy utilization percentage and higher carcass fat content with the lowest feed intake as compared to other experimental groups. The broiler chicks can utilize maize oil till 6% in their diet more efficiency as compared to other levels.