Abstract: A paper clamp for holding documents together, usable on desks and permissible of one-hand operation, the paper clamp comprising:a base plate; a pair of supports erected at opposite sides of the base plate; a lower plate pivotally supported by and between the pair of supports; an upper plate pivotally supported by and between the pair of supports, wherein the upper plate is pivotable in an opposite direction to that of the lower plate; the lower plate and the upper plate including toothed portions, which are in engagement with each other so as to enable the both plates to pivot in opposite directions; the upper plate terminating away from the terminating end of the lower plate; and a leaf spring provided between the lower plate and the base plate whereby the terminating end of the upper plate is placed into contact with the lower plate.