To provide a foil workpiece positioning device that allows a thin workpiece to be used in the other process without causing displacement.

In the foil workpiece positioning device, an electrode material 100 is conveyed into a mold 3 by a hand 2, and positioned at a position where the electrode material 100 is cut by the mold. Concurrently with or immediately after the positioning, only a suction operation of a suction conveyor 5 is started to suction the positioned electrode material 100 at the position, and the position is retained until the cutting is completed.