The present invention relates to a driver and a display device including the same, wherein the driver includes: a first driving circuit generating a first output signal; a second driving circuit generating a second output signal; and at least one buffer circuit generating a third output signal of a voltage level corresponding to a gate-on voltage level of the first output signal or the second output signal when the first output signal or the second output signal is transmitted as a gate-on voltage level, and the buffer circuit includes a first transistor transmitting the voltage of the first level as the third output signal, and a second transistor transmitting the voltage of a second level turning off the first transistor and connected to the gate electrode of the first transistor.