PROBLEM TO BE SOLVED: To provide an annular metal cord capable of maintaining a wound shape without generating twist slackness even for a continuous repetitive load; an endless metal belt having the same; and a method for manufacturing the same.SOLUTION: An annular metal cord C1 is provided, in which an core original cord 13 formed by twisting together a plurality of core strand materials 12 is untwisted, and one of the core strand materials 12 is fitted into a helical space part 5a formed by removing other core strand materials 12 while being formed into an annular shape, to form an annular core 11, and a side wire original cord 14 formed by twisting together at least six side wire strand materials 1 is untwisted, and one of the side wire strand material 1 is annularly wound around the annular core 11 for multiple times and is helically wound around a helical space part 5 formed by removing other side wire strand materials 1.