The present invention provides a disposable diaper improved so as to prevent body waste from leaking sideways without sacrificing a bodily fluid absorbing capacity of a liquid-absorbent structure and to assure a high retention for urine and discharged feces.The waist elastic members includes first waist elastic members 31 extending in a transverse direction in a vicinity of a waist-opening 16 and second waist elastic members 32 provided between leg-opening 17 and first elastic members 31 and the first elastic members and extending in the transverse direction across opposite lateral regions so as not to present in central zones of front and rear waist regions 13, 14. The second waist elastic members in the front waist region extend from transverse opposite side edges of the front waist region in the transverse direction beyond transverse opposite side edges 44c of a liquid-absorbent core 44 while the second elastic members in the rear waist region extend from transverse opposite side edges in the transverse direction and terminate short of the side edges of the core.
