Problem: The present invention provides a surface fastener loop member, sanitary article, and diaper that have favorable flexibility, engaging strength, and printing properties, and that can be manufactured at low cost. Resolution: A loop member for a surface fastener, containing a loop layer and a base material layer; wherein the loop layer comprises a short fiber nonwoven material; the base material layer comprises a short fiber nonwoven material, and is calendared; the ratio of the average fiber fineness of the fibers in the loop layer and the average fiber fineness of the fibers in the base material layer as expressed by [average fiber fineness of fibers in the loop layer]/[average fiber fineness of fibers in the base material layer] is 1.5 to 30, and the thickness of the base material layer is 15 μm to 100 μm.