An input apparatus includes: a light source that emits detection light toward a first direction, and raster scans a detection interface defined in space, with the detection light; a first light sensor that is disposed closer to the light source than the detection interface, and detects first reflected light which is the detection light that has been reflected; a second light sensor that detects second reflected light which is the detection light that has been reflected off an instructing body that has entered a detection region extending from the detection interface toward the light source; and a control unit that detects a coordinate value of the instructing body using received-light data obtained by the first light sensor and the second light sensor receiving light at the same timing.