This study was conducted to find out liver protective activity of naringin (NRG) 40-80 mg/kg body weight (b.w.) against acetaminophen (ACN) 2g/kg induced liver damage in rats. Thirty two male rats were divided into four groups : group1: negative control, (1 ml/kg Saline orally) group II: positive control ACN (2g/ kg), orally as single dose at first day, group III: ACN (2g/kg), orally as single dose at first day , plus NRG (40 mg//kg) orally for (8) consecutive days, group IV: ACN (2g/kg), orally as single dose at first day , plus NRG (80 mg//kg) orally for (8) consecutive days. All the rats were anesthetized to collect blood then killed on the (9) day of the experiment to take the liver samples. ACN induced liver damage was proved by a significant (P<0.01) reduction in the body weight , total protein (TP) , albumin (AB) , superoxide dismutase (SOD) and catalase (CAT) enzymes and a significant (P<0.01) increased in liver weight, serum aspartate transaminase (AST), alanine transaminase (ALT), alkaline phosphatase (ALP), total bilirubin (TB), direct bilirubin (DB) , malondialdehyde enzyme (MAD) and histopathological changes. Protective liver toxicity effect and oxidative damage caused by ACN significantly (P<0.01) increasing in body weight, TP, AB ,SOD and CAT and significantly (P<0.01) decreasing in liver weight , AST, ALT, ALP, TB, DB and MAD and improving tissue morphology by a meliorative in NRG 40 , 80 mg/kg b.w. These results confirm that NRG antioxidant effects can protect ACN induced hepatic toxicity in rats.