An image reading apparatus includes an image reading unit that is reciprocally movable in a predetermined direction; a guide member that supports the image reading unit and guides the image reading unit in the predetermined direction; a first cable that is fixed to the image reading unit at one end of the first cable and is deformable in accordance with a movement of the image reading unit; and a second cable that is fixed to the image reading unit at one end of the second cable and is deformable in accordance with the movement of the image reading unit, wherein the first cable and the second cable are provided such that a rotation moment of the image reading unit generated by a reaction force of the first cable and a rotation moment of the image reading unit generated by a reaction force of the second cable cancel each other out.