A process cartridge to be detachably attached to an electrophotographic image-forming apparatus body includes a cartridge frame; an electrophotographic photosensitive drum; a processing unit for acting on the electrophotographic photosensitive drum; a handle for gripping the process cartridge when the process cartridge is mounted on a first electrophotographic image-forming apparatus body; and an mounting unit provided in the cartridge frame, to which a handle member is attached for gripping the process cartridge when the process cartridge is mounted on a second electrophotographic image-forming apparatus body in a case where the second electrophotographic image-forming apparatus body is used on which the process cartridge is mounted in a direction different from that of the first electrophotographic image-forming apparatus. Thereby, by achieving commonality of the cartridge-frame structure, the system can corresponds to the first electrophotographic image-forming apparatus and the second electrophotographic image-forming apparatus.