A nonwoven fabric which, even when having a low basis weight, has a wide stretch range at time of use. It is inhibited from breaking or decreasing in strength upon stretching. It feels good to the touch and has excellent cushioning properties and high air permeability. The nonwoven stretch fabric has a longitudinal direction and a transverse direction perpendicular to the longitudinal direction. It has, arranged on each side, strip-form sparse regions extending in the longitudinal direction and strip-form dense regions extending likewise, the two kinds of regions being alternately and successively arranged in the transverse direction. The strip-form dense regions on one side and those on the other side are alternately arranged in the transverse direction. The nonwoven stretch fabric is constituted of a mixture of stretched fibers and stretchable fibers or is composed of stacked layers of these two kinds of fibers. The stretched fibers include stretched fibers which have been partly stretched in the area located between each of the strip-form dense regions on that one side and the adjacent one of the strip-form dense regions on the other side. The fibers constituting the partly stretched fibers have an average fiber diameter of 12-21 µm.
