A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system, comprising: a first calculation unit that converts a previously-defined first deceleration threshold value for turning-on a stop lamp to a first regenerative torque threshold value for turning-on the stop lamp at each vehicle speed by calculation assumed that a weight of the electric vehicle is a curb weight; a second calculation unit that converting a previously-defined second deceleration threshold value for turning-off the stop lamp to a second regenerative torque threshold value for turning-off the stop lamp at each vehicle speed by calculation assumed that the weight of the electric vehicle is a gross vehicle weight; a third calculation unit that calculates, based on the first regenerative torque threshold value and the second regenerative torque threshold value converted, a third regenerative torque threshold value for turning-off the stop lamp which is smaller than the first regenerative torque threshold value and larger than the second regenerative torque threshold value; and a determination unit that controls: the stop lamp to be turned on when a regenerative torque value generated by the electric regenerative braking system during a regenerative braking exceeds the first regenerative torque threshold value corresponding to a vehicle speed at that time; the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value corresponding to a vehicle speed at that time; and the stop lamp to be turned off when a state where the regenerative torque value is equal to or smaller than the third regenerative torque threshold value corresponding to a vehicle speed at that time continues to exceed a predetermined specific period of time. a first calculation unit that converts a previously-defined first deceleration threshold value for turning-on a stop lamp to a first regenerative torque threshold value for turning-on the stop lamp at each vehicle speed by calculation assumed that a weight of the electric vehicle is a curb weight; a second calculation unit that converting a previously-defined second deceleration threshold value for turning-off the stop lamp to a second regenerative torque threshold value for turning-off the stop lamp at each vehicle speed by calculation assumed that the weight of the electric vehicle is a gross vehicle weight; a third calculation unit that calculates, based on the first regenerative torque threshold value and the second regenerative torque threshold value converted, a third regenerative torque threshold value for turning-off the stop lamp which is smaller than the first regenerative torque threshold value and larger than the second regenerative torque threshold value; and a determination unit that controls: the stop lamp to be turned on when a regenerative torque value generated by the electric regenerative braking system during a regenerative braking exceeds the first regenerative torque threshold value corresponding to a vehicle speed at that time; the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value corresponding to a vehicle speed at that time; and the stop lamp to be turned off when a state where the regenerative torque value is equal to or smaller than the third regenerative torque threshold value corresponding to a vehicle speed at that time continues to exceed a predetermined specific period of time. the stop lamp to be turned on when a regenerative torque value generated by the electric regenerative braking system during a regenerative braking exceeds the first regenerative torque threshold value corresponding to a vehicle speed at that time; the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value corresponding to a vehicle speed at that time; and the stop lamp to be turned off when a state where the regenerative torque value is equal to or smaller than the third regenerative torque threshold value corresponding to a vehicle speed at that time continues to exceed a predetermined specific period of time.