FLUSH TOILET

The invention provides a flush toilet capable of ensuring the capacity of a water tank, miniaturizing the whole flush toilet, and ensuring the reliability of a controller. The flush toilet includes atoilet main body 2, a tank device 4 provided behind the toilet main body, and a private part washing device 48 configured to wash a private part of a user, the private part washing device being provided on a rear upper surface of the toilet main body behind the bowl 2a. The tank device includes a water supply part 6,14 configured to supply flush water supplied from a water supply source, a storagetank 10 for storing the flush water supplied from the water supply part, the storage tank being located behind the private part washing device and above a floor surface, a pump 30 configured to feedthe flush water in the storage tank to the toilet main body, and a controller C configured to control operation of the water supply part and the pump, and the controller is disposed on an outer uppersurface 42a of the storage t