A disposable wearing article adapted to be easily bent along fold lines developed in at least one of front and rear waist regions. A diaper 1 includes front and rear outer sheets 11, 12, an inner sheet 13 and front and rear waist-opening sheets 21, 22. First sheet segments 24, 25 of the front and rear waist-opening sheets 21, 22 each has a dimension in a longitudinal direction Y larger than each dimension of the second sheet segments 26, 27 in the longitudinal direction Y. End portions 24a, 25a are bonded to the respective outer surfaces of the front and rear outer sheets 11, 12 with end portions 26a, 27a left to be spaced apart from the front and rear outer sheets 11, 12, respectively, in the longitudinal direction Y. In the areas wherein the end portions 26a, 27a left to be spaced apart from the front and rear outer sheets 11, 12, the first sheet segments 24, 25 and the inner sheet 13 are overlapped to form low stiffness sub-regions. In respective sides inner than the respective low stiffness sub-regions as viewed in the longitudinal direction Y, the inner sheet 13, the front and rear outer sheets 11, 12 and the first sheet segments 24, 25 are respectively overlapped to form inner high stiffness sub-regions, and in respective sides outer than the respective low stiffness sub-regions, the inner sheet 13, the second sheet segments 26, 27 and the first sheet segments 24, 25 are overlapped to form outer high stiffness sub-regions.
