Abstract: Background and Objectives: Growth promoters possess great interest in poultry feeds including vitamins, medicinal plants, enzymes and antibiotics where play an active role in production of poultry. This study aimed to evaluate the effects of dietary inclusion of alpha-tocopherol and medicinal plants seeds powder Black Seeds (BS), Fenugreek (FENS), Moringa (MORS), Clitoria (CLIS), Sun flower (SFS) on broiler performance. Materials and Methods: During the finisher period, one hundred and 5, 1 day old male broiler chicks (Ross 308) were allocated into seven treatments. In a completely randomized design, the experimental treatments consisted: Negative control (without additives), 200 g kg–1 alpha-tocopherol (positive control) and tested seeds powder in 5% level of inclusion. Each treatment was replicated three times with 5 birds each .The experimental diets were formulated to be iso-energetic and iso-nitrogenous to meet the broiler requirements . Overall Daily Feed Intake (ADFI), Average Daily Gain (ADG) and Feed Conversion Ratio (FCR) were recorded. Three birds from each treatment were slaughtered. Then carcass percentage and relative weights of internal organs were determined. Results: The results showed that ADFI, ADG and FCR were significantly influenced by experimental treatments. The best FCR was recorded with BS treatment. The relative weights of internal organs were significantly influenced by experimental treatments. Conclusion: Based on results, it can be concluded that the average daily feed intake increased by the incorporation of SFS and CLIS where it was decreased by BS, MORS, FENS and Vit E inclusion. The best FCR was recorded with BS treatment which could be recommended to be included in broilers rations.