An internal voltage generation circuit including a voltage generator and a detection voltage generator. The voltage generator generates a temperature reference voltage signal whose level depends on an internal temperature, a division reference voltage signal whose level is constant regardless of the internal temperature, and a selection reference voltage signal obtained by detecting a level of an internal voltage signal. The detection voltage generator compares the division reference voltage signal and the selection reference voltage signal in response to the temperature reference voltage signal to generate a detection voltage signal controlling a pumping operation of the internal voltage signal.