A sheet bundle discharging apparatus K, including: a conveyance unit 66 configured to convey a sheet bundle; a guide unit 72 configured to guide the sheet bundle conveyed by the conveyance unit; a discharging unit 90 configured to discharge the sheet bundle to an outside of the sheet bundle discharging apparatus; and a receiving unit 81 configured to receive the sheet bundle guided by the guide unit, wherein the receiving unit includes: a contact portion 81c with which a leading end portion of the sheet bundle, which is guided by the guide unit, in a moving direction of the sheet bundle is to be brought into contact; and a pushing portion 81b, which is formed integrally with the contact portion, and is configured to push a first surface of the sheet bundle, and wherein the receiving unit is rotatable between a first position and a second position, and is configured to receive the sheet bundle in the first position and rotate from the first position to the second position, thereby allowing the pushing portion to push the first surface of the sheet bundle to place a second surface of the sheet bundle, which is on a side opposite to the first surface, on the discharging unit.