The efficacy of five systemic insecticides, namely, diazinon, dicrotophos, dimethoate, phosphamidon and oxydemeton-methyl, each at 0.1% a. i., was studied against the top shoot borer, Ommatolapus haemorrhoidalis (Wiedemann) (Curculionidae : Coleoptera) of cane (Calamus tenuis Roxb.). The insecticides were applied as foliar spray on 3-years old cane plantation at the Cane Arboretum of Bangladesh Forest Research Institute, Chittagong. Each insecticide reduced pest population significantly against the unsprayed control. Phosphamidon and oxydemeton-methyl worked better in reducing the pest attack followed by diazinon, dicrotophos and dimethoate. No visible phytotoxicity was recorded for any insecticide tested.