A metal ring loading and unloading apparatus is capable of loading and unloading a metal ring quickly and highly accurately for increased efficiency. The metal ring loading and unloading apparatus has a moving unit 41 slidably movable along a rail 48 which extends from a loaded ring placement unit 8 to an unloaded ring placement unit 11. On the moving unit 41, there are mounted a loaded ring delivering unit 9 for holding and delivering a metal ring W on the loaded ring placement unit 8 and an unloaded ring delivering unit 10 for removing the metal ring W from support rollers 3, 4 and delivering the metal ring W to the unloaded ring placement unit 11. The loaded ring placement unit 8 has a pressing unit for radially pressing the metal ring W to deform the metal ring W into a substantially elliptical shape. The loaded ring delivering unit 9 has a loaded ring gripping unit 26 for gripping the metal ring W deformed by the pressing unit. The unloaded ring delivering unit 10 has an unloaded ring gripping unit 53 for gripping the metal ring W under its own recovering resiliency produced when the support rollers 3, 4 move toward each other. The unloaded ring placement unit 11 has a releasing unit for releasing the metal ring W from the unloaded ring gripping unit 53.