A workpiece conveying apparatus for a pressing machine, comprising: two robots (101A, 101B) arranged symmetrically with respect to an XZ plane passing a workpiece conveying center, each of the two robots (101A, 101B) 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; two raising and lowering mechanisms (10A, 10B) arranged to correspond to the two robots (101A, 101B), respectively, and configured to enable the corresponding raising and lowering frames to mutually independently move in the Z-axis direction; a cross arm configured to couple distal ends of second arms arranged on both sides across the XZ plane so as to be freely rotatable within the horizontal plane through intermediation of a third joint and freely rotatable within a vertical plane through intermediation of a fourth joint; and a workpiece holding unit connected to the cross arm and configured to releasably hold the workpiece. two robots (101A, 101B) arranged symmetrically with respect to an XZ plane passing a workpiece conveying center, each of the two robots (101A, 101B) 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 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; two raising and lowering mechanisms (10A, 10B) arranged to correspond to the two robots (101A, 101B), respectively, and configured to enable the corresponding raising and lowering frames to mutually independently move in the Z-axis direction; a cross arm configured to couple distal ends of second arms arranged on both sides across the XZ plane so as to be freely rotatable within the horizontal plane through intermediation of a third joint and freely rotatable within a vertical plane through intermediation of a fourth joint; and a workpiece holding unit connected to the cross arm and configured to releasably hold the workpiece.