Abstract: BACKGROUND: Shivering is an increased muscular activity that can caused by spinal anaesthesia. Dexamethasone is a steroid drug that can lower the incidence of post anaesthetic shivering by decreasing the dermal temperature and core temperature gradient. This study aimed to compare the effect of dexamethasone and pethidine in lowering the incidence of shivering in caesarean section patients under spinal anaesthesia.