A disposable diaper provided at least in one of the front and rear waist regions with a pocket adapted to receive and to contain a relatively large amount of body exudates. Achassis (14) includes a main portion (59), lateral portions lying outboard of the main portion (59) in the transverse direction (X) along which leg elastics (26, 27) extending in a longitudinal direction (Y) in the crotch region (13) are provided and a pair of lateral elastic regions (25) formed by folding the both lateral portions. At least in the rear waist region (12) of the front and rear waist regions (11, 12), waist pocket panels (51, 52) formed contiguously to or separately of elastic belt panels (16, 18) and adapted to connect the inner lateral edge portions (25a) of the lateral elastic regions (25) are provided and the elastic belt panels (16, 17) are attached to the outer lateral portions (25b) of the lateral elastic regions (25).