This experiment was conducted to study the effect of feeding diets containing different levels of parsley on the blood biochemical characteristics of local Iraqi geese. A total of twenty-four local geese, one year old, were used in this experiment during the period from the beginning of October to the end of December. The birds were allocated for Four treatment groups consisted of six geese each. Treatment groups were as follows: Control diet (T1) (free from parsley), T2: Control diet + 80 g / d parsley, T3: Control diet + 160 g / d parsley; T4: Control diet + 240 g / d parsley. At the end of experiment, blood samples were obtained from all geese by venipuncture from brachial vein and blood plasma samples were prepared. Blood biochemical traits included in this study were blood plasma concentrations of glucose, total protein, albumen, globulin, uric acid, total cholesterol, triglycerides, and high density lipoprotein (HDL), low density lipoprotein (LDL), very low density lipoprotein (VLDL), calcium, phosphorus and creatinine and blood plasma activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) enzymes. Results revealed that supplementing the diet of geese with different levels of parsley (T2, T3 and T4) resulted in significant (p< 0.05) increase in blood plasma glucose, total protein, albumen, globulin, HDL, calcium, phosphorus and ALP, and significant (p< 0.05) decrease in uric acid, total cholesterol, triglycerides, LDL, VLDL, and creatinine in comparison to the control group (T1). Whereas, there were no significant (p> 0.05) differences between all experimental groups with respect to blood plasma AST and ALT. However, T3 group (160 g parsley / day) and T4 group (240 g parsley / day) recorded the best results concerning the majority of blood biochemical traits included in this study as compared with T1 (control group) and T2 (80 g parsley per day). In Conclusion: supplementing the ration of geese with parsley resulted in significant improvement in most of blood plasma traits involved in this study. So, parsley can be used as an effective feed additive for enhancing general physiological status of birds