A workpiece conveying apparatus for a pressing machine, comprising: two robots (101A, 101B) each comprising: a raising and lowering frame supported on a stationary frame so as to be movable in a Z-axis direction being an up-and-down direction, the stationary frame being mounted to extend along a Y-axis direction that is a width direction orthogonal to an X-axis direction being a workpiece conveying direction of a passage space for conveying a workpiece; a first arm supported at a proximal end side thereof on the raising and lowering frame through intermediation of a first joint so as to be freely rotatable within a horizontal plane; a second arm supported at a proximal end side thereof on a distal end side of the first arm through intermediation of a second joint so as to be freely rotatable within the horizontal plane; a first arm driving mechanism configured to drive the first arm to rotate about the first joint with respect to the raising and lowering frame; and a second arm driving mechanism configured to drive the second arm to rotate about the second joint with respect to the first arm; a raising and lowering mechanism (10A, 10B) configured to enable the two robots (101A, 101B) to move in the Z-axis direction; a cross arm configured to couple distal ends of second arms of the two robots (101A, 101B) so as to be freely rotatable within the horizontal plane through intermediation of a third joint; a workpiece holding unit removably connected to the cross arm and configured to releasably hold the workpiece through intermediation of a tool holder (S13a); a shifting device (S1A, S1B) mounted to the cross arm and configured to move, by a shifting movement drive source, a drive-side shifting member along a longitudinal direction of the cross arm relative to the cross arm; and a sliding device (S11A, S11B) mounted to the workpiece holding unit and configured to move, under a state in which the workpiece holding unit is connected to the cross arm, the tool holder (S13a) in a Y-axis direction by an operation of causing a driven-side shifting member corresponding to the drive-side shifting member to be driven by the drive-side shifting member. a raising and lowering frame supported on a stationary frame so as to be movable in a Z-axis direction being an up-and-down direction, the stationary frame being mounted to extend along a Y-axis direction that is a width direction orthogonal to an X-axis direction being a workpiece conveying direction of a passage space for conveying a workpiece; a first arm supported at a proximal end side thereof on the raising and lowering frame through intermediation of a first joint so as to be freely rotatable within a horizontal plane; a second arm supported at a proximal end side thereof on a distal end side of the first arm through intermediation of a second joint so as to be freely rotatable within the horizontal plane; a first arm driving mechanism configured to drive the first arm to rotate about the first joint with respect to the raising and lowering frame; and a second arm driving mechanism configured to drive the second arm to rotate about the second joint with respect to the first arm; a raising and lowering mechanism (10A, 10B) configured to enable the two robots (101A, 101B) to move in the Z-axis direction; a cross arm configured to couple distal ends of second arms of the two robots (101A, 101B) so as to be freely rotatable within the horizontal plane through intermediation of a third joint; a workpiece holding unit removably connected to the cross arm and configured to releasably hold the workpiece through intermediation of a tool holder (S13a); a shifting device (S1A, S1B) mounted to the cross arm and configured to move, by a shifting movement drive source, a drive-side shifting member along a longitudinal direction of the cross arm relative to the cross arm; and a sliding device (S11A, S11B) mounted to the workpiece holding unit and configured to move, under a state in which the workpiece holding unit is connected to the cross arm, the tool holder (S13a) in a Y-axis direction by an operation of causing a driven-side shifting member corresponding to the drive-side shifting member to be driven by the drive-side shifting member.