A coordinate input device comprising: a coordinate input unit having a plurality of driving electrodes (Y_SENS) and a plurality of detection electrodes (X_SENS), the driving electrodes being disposed in parallel to each other, the detection electrodes being disposed in parallel to each other and intersecting with the driving electrodes; an electrode drive circuit that selects one or more of the driving electrodes and applies a drive signal to the selected driving electrodes; a capacitance detection circuit that detects a capacitance in a vicinity of an intersection between the driving electrode applied the drive signal and the detection electrode in synchronization with the drive signal; further comprising: means for selecting a limited number of one, two or three of the driving electrodes in the vicinity of said intersection to which the drive signal is not applied from among the driving electrodes, as a reference electrode; means for detecting a signal from the reference electrode; means for correcting a capacitance detection result obtained by the capacitance detection circuit on the basis of the detected signal from the reference electrode, the capacitance detection result obtained for the capacitance in a vicinity of the intersection; and an input coordinate computing circuit that calculates an input coordinate from the corrected capacitance detection result, wherein each of the driving electrodes is connected to the electrode drive circuit via a first switch and connected to the capacitance detection circuit via a second switch. a coordinate input unit having a plurality of driving electrodes (Y_SENS) and a plurality of detection electrodes (X_SENS), the driving electrodes being disposed in parallel to each other, the detection electrodes being disposed in parallel to each other and intersecting with the driving electrodes; an electrode drive circuit that selects one or more of the driving electrodes and applies a drive signal to the selected driving electrodes; a capacitance detection circuit that detects a capacitance in a vicinity of an intersection between the driving electrode applied the drive signal and the detection electrode in synchronization with the drive signal; further comprising: means for selecting a limited number of one, two or three of the driving electrodes in the vicinity of said intersection to which the drive signal is not applied from among the driving electrodes, as a reference electrode; means for detecting a signal from the reference electrode; means for correcting a capacitance detection result obtained by the capacitance detection circuit on the basis of the detected signal from the reference electrode, the capacitance detection result obtained for the capacitance in a vicinity of the intersection; and an input coordinate computing circuit that calculates an input coordinate from the corrected capacitance detection result, wherein each of the driving electrodes is connected to the electrode drive circuit via a first switch and connected to the capacitance detection circuit via a second switch. means for selecting a limited number of one, two or three of the driving electrodes in the vicinity of said intersection to which the drive signal is not applied from among the driving electrodes, as a reference electrode; means for detecting a signal from the reference electrode; means for correcting a capacitance detection result obtained by the capacitance detection circuit on the basis of the detected signal from the reference electrode, the capacitance detection result obtained for the capacitance in a vicinity of the intersection; and an input coordinate computing circuit that calculates an input coordinate from the corrected capacitance detection result, wherein each of the driving electrodes is connected to the electrode drive circuit via a first switch and connected to the capacitance detection circuit via a second switch.