A process cartridge mountable within an image forming apparatus, includes an image bearing member, process means acting on the image bearing member, a frame, and a first guide surface provided on the frame and adapted to guide a recording medium toward the image bearing member, and a second guide surface recessed more than the first guide surface and having width smaller than that of the first guide surface. With the above construction, it is possible to provide a process cartridge and an image forming apparatus within which such a process cartridge can be mounted, which can be made small-sized and light-weighted and which are easy to use.