Abstract: A door damper includes a base, an outer tube having one end rotatably received in the base, an inner tube retractably received in the outer tube, a contacting member disposed to the inner tube so as to contact an inner side of a door, an actuating member including a handle and an end plate which extend transversely from an end of the handle wherein the end plate inserted into and pivotally connected to the inner tube via a slot defined in the inner tube, and an actuating member eccentrically disposed to a free end of the end plate and rotatably received in an underside of the contacting member.