The present invention relates to an end cap for a showcase roller shelf. The end cap for a showcase roller shelf according to an embodiment of the present invention, in a state where roller unit bodies including casings enclosing the outer perimeter of a roller support body are arranged in a plurality of rows, is inserted into and is supported on both ends of each casing while a plurality of rollers are rotatably supported on the roller support body so as to slide a product on the inside of a showcase and move the product to a withdrawal location. The end cap for a showcase roller shelf comprises: cap bodies which are disposed on both ends of each casing so as to face each other, and are installed on locations crossing both ends of each casing disposed in a plurality of rows; and a plurality of protruding bodies which: protrude from locations where the cap bodies face each other so as to be inserted into both ends of each casing disposed in a plurality of rows, wherein the protrusion distances thereof are adjusted so that the rollers arranged in a plurality of rows in locations where the plurality of casings are inserted are positioned at locations where rotation centers are different in each row; and protrude alternately repeatedly while the protrusion distances thereof, by which an adjacent row among a plurality of row locations is supported, are different from each other.