A turbocharger comprising: a turbine housing accommodating a turbine wheel rotatably; a bearing housing attached to the turbine housing and rotatably supporting a rotation shaft of the turbine wheel; a compressor housing attached to an opposite side of the bearing housing from the turbine housing; a variable nozzle mechanism; and a stopper configured to adjust an opening degree of the variable nozzles on a full-open side or a full-close side, the variable nozzle mechanism being configured to change a vane opening angle of a plurality of nozzle vanes by means of an actuator so as to change a flow rate of exhaust gas flowing into the turbine wheel, the actuator comprising an actuator body attached to an actuator bracket which is secured to the turbine housing and an actuator rod which is configured to advance or retreat, the actuator rod extending outside from an interior of the actuator body and transmitting a drive power generated by the actuator body to the nozzle vanes via a lever and a connection mechanism, the connection mechanism being connected to the actuator rod on which a male screw is formed; the stopper being constituted by an immovable-side stopper part provided on the actuator bracket and a movable-side stopper part provided at the actuator rod that moves with respect to the immovable-side stopper part and being contactable with the immovable-side stopper part, characterized in that the movable-side stopper part is constituted by a nut (31, 32) provided on the male screw of the actuator rod and the immovable-side stopper part is a nut receiving part constituted by a heat insulation panel that is attached to the actuator bracket so as to insulate the actuator body from heat. a turbine housing accommodating a turbine wheel rotatably; a bearing housing attached to the turbine housing and rotatably supporting a rotation shaft of the turbine wheel; a compressor housing attached to an opposite side of the bearing housing from the turbine housing; a variable nozzle mechanism; and a stopper configured to adjust an opening degree of the variable nozzles on a full-open side or a full-close side, the variable nozzle mechanism being configured to change a vane opening angle of a plurality of nozzle vanes by means of an actuator so as to change a flow rate of exhaust gas flowing into the turbine wheel, the actuator comprising an actuator body attached to an actuator bracket which is secured to the turbine housing and an actuator rod which is configured to advance or retreat, the actuator rod extending outside from an interior of the actuator body and transmitting a drive power generated by the actuator body to the nozzle vanes via a lever and a connection mechanism, the connection mechanism being connected to the actuator rod on which a male screw is formed; the stopper being constituted by an immovable-side stopper part provided on the actuator bracket and a movable-side stopper part provided at the actuator rod that moves with respect to the immovable-side stopper part and being contactable with the immovable-side stopper part, characterized in that the movable-side stopper part is constituted by a nut (31, 32) provided on the male screw of the actuator rod and the immovable-side stopper part is a nut receiving part constituted by a heat insulation panel that is attached to the actuator bracket so as to insulate the actuator body from heat.