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This research was conducted to investigate the effect of different levels of (nano-ZnO) and Curcuma longa (Cur-L) on the quality traits of thigh and breast meat in broiler chickens on d 42 ages. A total of 300 one-d-old male broiler (Ross-308) were randomly divided into 5 groups, including 60 birds with four replicates and 15 birds in each. The experimental groups were as follows: T1) basal diet, and T2-T5, basal diet supplemented with 50 mg of nano-ZnO with 2 and 4 grams CurL and 100 mg of nano-ZnO with 2 and 4 g Cur-L/kg of diet. On d 42, four birds from each treatment randomly selected, and then slaughtered. The breast and thigh muscle removed to measure of those quality parameters. The results showed that the effects of nano-ZnO and CurL on the humidity, dry matter, crude protein, ash, calcium and phosphor of breast muscles and humidity, dry matter, crude protein, calcium, phosphor and crude fat of thigh muscles were meaningful (P<0.05), But they had no significant effects on the breast crude fat and thigh ash (P>0.05). The lowest breast humidity and the highest breast dry matter observed in the diet including 100 mg of nano-ZnO and 2 grams of CurL per kilogram. The highest breast crude protein, ash and phosphor observed in basal diet (control). The breast Ca of the birds fed the diet inclusion of 100 mg of nano-ZnO and 2 g of CurL was the highest amount, but no significant difference with the control diet (P>0.05). The lowest thigh humidity and the highest thigh dry matter observed in the diet including 50 mg of nano-ZnO and 2g of Cur-L/kg. The highest thigh crude protein, calcium and phosphor numerically observed in the control diet. The thigh crude fat percentage in the diet including 100 mg of nano-ZnO and 4g of Cur-L/kg was significantly different when compared with other treatment (P<0.05). It was concluded that the blend of 50 mg of nano-ZnO and 2g of Cur-L/kg could be improved carcass quality. As well, the increase CP and the decrease the crude fat in the broiler's breast and thigh.