Present study was undertaken to evaluate the acetamiprid-mediated toxicity and possible protective effect of curcumin in rats. Rats were divided into seven different groups. They received curcumin (100 mg/kg, b.wt. p.o.) and acetamiprid (26.25 and 105 mg/kg b.wt., p.o.) alone and in their combinations for period of 28 days. Lipid peroxidation and antioxidant enzyme activities were determined in liver, kidney and brain and cellular changes histopathologically. Study shows that administration of acetamiprid caused a significant induction in oxidative damage in liver, kidney and brain as evidenced by increased level of lipid peroxidation (LPO) and altered activities of reduced glutathione (GSH), catalase (CAT), superoxide dismutase (SOD) and glutathione reductase (GR). Co-administration of curcumin with acetamiprid significantly decreased LPO, caused marked restoration in the non-enzymatic (GSH) and enzymatic antioxidants system (CAT, SOD and, GR) and protected from acetamiprid-mediated structural alterations of liver, kidney and brain. The results of present study indicates that curcumin ameliorate the acetamiprid-induced toxic damage to vital organ mediated via oxidative stress.