An image reading apparatus includes a conveyor configured to convey a sheet along a predetermined conveyance path; a platen a sheet pressing member made of a resin member; spacers provided on both end portions of the sheet pressing member in a width direction, wherein each of the spacers protrudes toward a platen side, a tip end of the spacer in the protrusion direction contacting the platen at positions out of a reading range of a reading unit in the width direction to secure a gap between the sheet pressing member and a platen; and a protruding portion provided on a central portion of the sheet pressing member in the width direction.