This study conducted to investigate the effects of garlic (Allium sativum) powder as a growth promoter on growth performance and carcass characteristics of broiler. Thirty 1-day old chicken were randomly allocated to three treatments and two replications by using Completely Randomized Design (CRD) for 42 days of the experiment. The treatments included C (Control group with 0% garlic), T1 (Treatment 1= Chicken received 1.5% garlic powder) and T 2 (Treatment 2= Chicken received 2% garlic powder). Body weight, body weight gains and feed consumption measured at the end of each week and the body part weight measured at the end of day 42. The result showed, the feeding group by 2% garlic powder had statistically significant high values on body weight during the days of 14-21, 28-35 and 35-42 (p