This study was conducted at animal production farms at Kosar Agricultural Research Company in Arbil from July 20, 2022, to August 24, 2022 (35 days). This study aims to examine the impact of adding chitosan and probiotics to the diets of broilers on their productive performance. A total of 144 unsexed broiler chicks from Ross 308 were used in this study. The chicks were of average weight (43 g) at one-day old. These chicks were divided into six treatments with three replicates (8 per treatment). The first treatment was without any addition (control treatment); the second treatment was adding 1 g/kg of probiotic; the third treatment was adding 0.5 g/kg of chitosan; the fourth treatment was adding 1 g/kg of chitosan; the fifth treatment was adding 0.5 g/kg of chitosan plus 1 g/kg of probiotic; and the sixth treatment was adding 1 g/kg of chitosan plus 1 g/kg of probiotic. The foundation of this study was that there was a significantly increasing (P< 0.05) in the live body weight for T5, and a significantly increasing (P< 0.05) in the average of weight gain for T1. The average feed consumption for T2 and T3 improved significantly (P< 0.05), and the average FCR for T2 and T3 improved significantly (P< 0.05). According to the findings of this study, adding chitosan and probiotics to the diets of broilers improved their productivity.