In planar view, this disposable diaper (10) has a central line (O) which, running in the longitudinal direction (L) of a pair of pieces of fastening tape (90), overlaps with an elastic waist part (85) and does not overlap with an absorbent body (40). The length (W1) of the elastic waist part (85) in the width direction (W) is longer than the length (W2) of the absorbent body (40) in the width direction (W). The elongation rate of a region (A) of the elastic waist part (85) positioned to the outside of the absorbent body (40) in the width direction (W) is different from the elongation rate of a region (B) of the elastic waist part (85) positioned to the inside of the absorbent body (70) in the width direction (W).
