A sticky note pad includes a stack of note sheets. Each of the note sheets includes: a substrate having a writing face and a back face opposite to the writing face, the back face having a central portion and a peripheral portion surrounding the central portion, the central portion including a looped boundary, at least two first regions that are spaced apart in a radial direction, and at least one second region disposed between the at least two first regions; and an adhesive layer positioned on the central portion of the back face and including at least two adhesive material units respectively disposed on the first regions and separated from each other by the second region.