A staple refill includes a refill body accommodating sheet-type connected staples. The refill body includes a bottom wall, a right wall provided on a right side of the bottom wall, a left wall provided on a left side of the bottom wall, and a front wall provided on front sides of the right and left walls. A pressing member is provided in the refill body in a movable manner to press the sheet-type connected staples, the pressing member including a first guide projection at a front end of the pressing member configured to contact an inner surface of the front wall.