A medium transporting apparatus includes an endless conveyor belt having an outer surface to which a sheet P adheres, at least two rollers, which are a first roller and a second roller, around which the conveyor belt extends. The second roller is located downstream of the first roller in a medium transporting direction. The medium transporting apparatus also includes a backing plate that supports an inner surface of the conveyor belt at a position between the first roller and the second roller. In the medium transporting apparatus, the backing plate includes a hollow-containing portion that is formed at an upstream end of the backing plate in the medium transporting direction. The hollow-containing portion has a plurality of hollows formed therein in a width direction that intersects the medium transporting direction. The plurality of hollows are formed in a support surface that supports the conveyor belt.