The present study was conducted to investigate the effects of feeding sunflower meal on Mamourah laying hen performance, egg quality, egg fertility and hatchability and some blood constituents. Two hundred and ten (30 males and 180 females), 23-week-old Mamourah laying hens were used. Five isocaloric (ME; of about 2700 kcal/kg) and isonitrogenous (CP; of about 16%) experimental diets containing graded levels of sunflower meal (0.00, 6.75, 13.50, 20.25 and 27.00% of the diet) were formulated and used. The birds were randomly distributed into five groups; each with three replicates and fed the experimental diets from 23 to 39 weeks of age. The criteria of response were laying performance (egg production rate, egg weight, total egg mass, feed intake and feed conversion), economic efficiency, egg quality (egg components and certain parameters of exterior and interior quality), egg fertility, hatchability and embryonic mortality. Some blood parameters (serum glucose, total protein, total lipids and cholesterol as well as activities of serum transaminases; ALT and AST) were also determined. The statistical analyses of the data indicated that no significant differences were detected among treatments in all studied criteria. These results indicated that, practically and economically, sunflower meal could be used in laying hen diets up to 27% of the diet without any adverse effects on the productive and reproductive performance of the laying hens.