The present study was conducted to assess the effect of paulownia (Paulownia tomentosa) leaf extract (PLE) enriched diets on the quality of meat and the economic efficiency of broiler chickens. A total of 180 one-day-old male chicks (Cobb) were randomly assigned to four treatments with five replications each (9 birds per replicate). The chickens were fed corn-soybean-based diets supplemented with different levels of PLE (0, 0.1, 0.3, and 0.5 g kg
1) for 42 days. The results showed that the inclusion of up to 0.5 g kg
1 PLE in the diet of broiler chickens significantly improved the live body weight, carcase weight, and carcase components (liver, heart, and gizzard) weights compared to the control group (P<0.05). Enriched broiler diets with 0.5 g kg
1 of PLE significantly reduced collagen and lipid content as well as increased total protein levels in both breast and thigh muscle compared to the un-supplemented group (P<0.001). Subjective evaluation of the breast meat showed a significant linear improvement in flavour and juiciness of meat samples from birds fed with dietary PLE in a dose-dependent manner (P<0.05). Supplementation with different levels of PLE significantly improved the sensory attributes (flavour, tenderness, juiciness, and overall acceptability) of thigh meat in a dose-dependent manner (linear; P<0.05). Total potential return and net profit were significantly increased in all groups fed PLE compared to the control group. Birds that received PLE-supplemented diets at a level of 0.5 g kg
1 had the highest economic efficiency (P<0.05). Conclusively, supplementation with 0.5 g PLE/kg in broiler diets could improve meat quality and economic efficiency