An image reading apparatus is provided with a first image reading unit and a second image reading unit. The first image reading unit reads an image on a first side of a document that is transported in a predetermined direction on a document transport path, at a first image reading position. The second image reading unit reads an image on a second side of the document that is transported in the predetermined direction on the document transport path, at a second image reading position. A transport roller and a bent portion of the document transport path are arranged in this order along the document transport direction upstream of each of the first image reading position and the second image reading position in the document transport direction.