A disposable wearing article adapted to restrict a possibility that the article might become locally bulky and a packaged assembly of such disposable wearing articles. A diaper (1) has front and rear waist panels (20, 30) defining front and rear waist regions (2, 3), respectively, and an intermediate panel (40) defining parts of the front and rear waist regions and a crotch region (4). The diaper (1) is folded on itself substantially in a flat condition so that inner sheets (24, 34) of the front and rear waist panels (20, 30) may face each other, respectively, and an inner sheet of the intermediate panel (40) may face itself. Specifically, the diaper (1) is folded on itself along a first fold line (81) at least partially corresponding to an imaginary transverse center line (Q-Q). In the diaper (1) having been folded on itself along the first fold line (81), a crotch midsection (83) in the crotch region (3) has a thickness dimension smaller than a thickness dimension of regions (85) lying in the front and rear waist panels (20, 30).
