A fluid tank includes a tank main body that contains a fluid and a bubble removing device that is provided to an inside of the tank main body and removes bubbles contained in the fluid. The tank main body includes a partition that partitions the inside of the tank main body to at least two sides and a delivery port through which the fluid is fed to an outside. The bubble removing device has an outflow port through which the fluid from which the bubbles have been removed flows to the inside of the tank main body and a bubble exhaust port through which the bubbles which have been removed are discharged to the inside of the tank main body. The delivery port is provided adjacent to the outflow port relative to the partition. The partition partitions the inside of the tank main body to a side in which the outflow port and the delivery port are provided and a side of the bubble exhaust port.