The present study aimed to investigate the effect of dietary green tea and dried seaweeds supplementation for local Sinai hens at late phase of production (52-64 wks of age) on egg production, egg quality, physiological and immunological performance. Two hundred and seventy Sinai hens-52 wks-old were randomly assigned to 9 equal experimental treatments (30 hens each were divided into equal three replicates). Experimental groups were fed as follows: the first group fed a basal diet (control group),the second and third groups were fed a basal diet supplemented with green tea by 0.1% and 0.2%, respectively, the fourth and fifth groups were fed a basal diet supplemented with brown seaweed by 0.1% and 0.2%, respectively, the sixth and seventh groups were fed a basal diet supplemented with green seaweed 0.1% and 0.2% , respectively and the eighth and ninth group were fed a basal diet supplemented with red seaweed by 0.1% and 0.2%,.The obtained results indicated that, live body weight (LBW) of Sinai hens at 64 wks of age and change in body weight (CBW) during the experimental period were significantly improved with green tea as compared with the control diet. Laying rate, and egg mass were significantly improved by green tea and dried seaweed supplementation as compared to the control group. Feed consumption (FC) was increased by supplementing green tea and dried seaweed, however, feed conversation ratio was improved compared to the control without significant differences during the experimental period. Serum total cholesterol, LDL, VLDL, triglycerides and total lipids values were significantly decreased, while, HDL cholesterol was significantly increased for different dietary supplementations as compared to the control group. Supplementing green tea and dried green seaweed had a significant effects on serum total protein, albumin and globulin as compared to the control group. Liver and kidney functions were improved by addition of green tea and seaweed to hen's diet. Therefore, dietary supplementation of green or red seaweeds by 0.1% to laying hens diet at the late phase of production could be used to improve egg production, egg quality, physiological and immunological performance of Sinai laying hens