Deltamethrin (DLM) is a type-II pyrethroid synthetic insecticide that is extensively used for controlling mosquitoes, ies, pests, insects worldwide. Oxidative stress is one of the DLM toxicity mechanisms. This study was carried out to evaluate the likelihood protective effects of rutin (RUT), a natural antioxidant, against DLM-induced liver and kidney toxicities in rats. Hepatotoxicity and nephrotoxicity were evaluated after the rats were treated orally with DLM (1.28 mg/kg b.w.) alone or with RUT (25 and 50 mg/kg b.w.) for 30 days. DLM administration caused an increase in lipid peroxidation level and a decrease in activities of SOD, CAT, and GPx and GSH levels in the both tissues. DLM also increased serum ALT, AST, ALP, urea, and creatinine levels, while reduced nephrine levels in rats. In addition, DLM increased the activation of in ammatory and apoptotic pathways by decreasing Bcl-2 and increasing TNF-α, NF-κB, IL-1β, p38α MAPK, COX-2, iNOS, beclin-1, Bax, and caspase-3 protein levels and/or activities. Furthermore, DLM increased mRNA expression levels of PARP-1, VEGF and immunohistochemical expressions of c-fos in the tissues. RUT treatment signi cantly improved all examined parameters and restored the liver and kidney histopathological and immunohistochemical alterations. These ndings demonstrate that RUT could be used to ameliorate hepatotoxicity and nephrotoxicity associated with oxidative stress, in ammation, and apoptosis in DLM-induced rats.