A transfer robot includes a first arm provided rotatably around a first axis which extends along a vertical direction, a second arm connected to the first arm rotatably around a second axis which extends along the vertical direction, an arm distal end portion which is configured to be connected to a workpiece holder to hold a workpiece and which is connected to the second arm rotatably around a third axis which extends along the vertical direction, and a posture adjuster configured to rotate the workpiece around a first posture adjustment axis which intersects both the third axis and a direction extending toward the arm distal end portion away from the third axis.