A foot controller to be used for operation of a device includes: a placement part on which a foot is to be placed; a first operating part capable of being operated back and forth and left and right by the foot placed at a first position of the placement part; and a second operating part capable of being operated back and forth and left and right by the foot placed at a second position of the placement part. On the placement part, the first operating part and the second operating part are arranged along a front-back direction, and a predetermined operation of the device is selected in accordance with a direction of an operation on the first operating part or the second operating part.