Spinal anesthesia is thought to be contraindicated for patients with multiple sclerosis (MS). We describe the case of a patient with MS who was administered spinal anesthesia for cesarean section. A 29-year-old woman (weight 55.8 kg, height 154 cm) with MS underwent an urgent cesarean section in the 39th week of her pregnancy for fetal malpresentation. Although the patient had experienced repeated relapses of MS thrice since she was 19, she had remained in remission since the age of 27, and did not have significant neurological disability. A 27 G needle (pencil type) was used for arachnoid puncture, and 0.5% hyperbaric bupivacaine (2.0 ml) was administered to the subarachnoid space at the L3-4 interspace. After confirming that the sensory blockade after spinal anesthesia had spread to T4, cesarean section was performed. For the subsequent 19 months, no remission of MS was recognized. Thus, spinal anesthesia does not seem to be contraindicated for patients with MS in remission state.