The present study aims to assess different levels of parsley on the performance of broilers. The number of commercial broiler chicks (Ross 308) was 120 day old, randomly divided into 5 treatments with 3 replicates, meaning that each treatment had 24 chicks over a 6 week period. T1 was a control group whose diet level was lack of supplements (core diet). However, other T2, T3, T4 and T5 treatments included supplementing parsley at the level of 3, 6, 9 and 12 g/kg respectively. As part of the growth performance parameter at the end of the experiment, 4 chickens were slaughtered to estimate carcass and muscle characteristics. Therefore, the use of parsley at the rate of 9 g/kg had a significant influence on body weight and body weight gain. Efficiency of feed conversion and feed intake improved numerically compared to the control group throughout the study period. The highest thigh and carcass weights were obtained at a parsley feed level of 9 g/kg and there was no difference between treatments for animal weight, percent dressing. and the wing. In addition, there was no significant difference (P<0.05) in organ weights between the different treatments.