A coordinate input apparatus which detects a position pointed in a region surrounded by at least four sensor units, based on detection outputs from two sensor units corresponding to the pointed position out of the at least four sensor units stores, in a memory unit, correction values which are based on respective detection outputs of a plurality of combinations each of two sensor units out of the at least four sensor units for one position corresponding to the plurality of combinations, and calculates the pointed position based on the detection outputs from two sensor units corresponding to the pointed position, and the correction values stored in the memory unit.