A single-eye stereoscopic imaging device comprising: a single imaging optical system; a single imaging element; pupil division means (17 A, B) comprising either i) a microlens and light-shielding members (17A, 17B) provided on the front surface side of the single imaging element, the pupil division means thus being configured for dividing beams passing through the single imaging optical system into a plurality of beams; or ii) a microlens relatively shifted in the lateral direction with respect to the single imaging element, the pupil division means thus being configured for limiting the beams passing through the single imaging optical system by the shift direction; the single imaging element including a plurality of pixel groups which receive the plurality of divided or limited beams, the beams being focused by the microlens on the single imaging element; first shading correction means (67 B) for performing two-dimensional shading correction for all imaging signals output from the single imaging element using a two-dimensional correction table in which correction values for correcting shading in horizontal and vertical directions caused by the imaging optical system, in which the amount of light is different at the center and at the end of the imaging lens, are arranged; and characterized by second shading correction means (67 A) for performing one-dimensional shading correction for each imaging signal output from the plurality of pixel groups using a one-dimensional correction table in which correction values for correcting shading in the pupil division direction, which is a gradient direction of brightness unevenness caused by pupil division of the pupil division means (17 A, B), are arranged. a single imaging optical system; a single imaging element; pupil division means (17 A, B) comprising either i) a microlens and light-shielding members (17A, 17B) provided on the front surface side of the single imaging element, the pupil division means thus being configured for dividing beams passing through the single imaging optical system into a plurality of beams; or ii) a microlens relatively shifted in the lateral direction with respect to the single imaging element, the pupil division means thus being configured for limiting the beams passing through the single imaging optical system by the shift direction; i) a microlens and light-shielding members (17A, 17B) provided on the front surface side of the single imaging element, the pupil division means thus being configured for dividing beams passing through the single imaging optical system into a plurality of beams; or ii) a microlens relatively shifted in the lateral direction with respect to the single imaging element, the pupil division means thus being configured for limiting the beams passing through the single imaging optical system by the shift direction; the single imaging element including a plurality of pixel groups which receive the plurality of divided or limited beams, the beams being focused by the microlens on the single imaging element; first shading correction means (67 B) for performing two-dimensional shading correction for all imaging signals output from the single imaging element using a two-dimensional correction table in which correction values for correcting shading in horizontal and vertical directions caused by the imaging optical system, in which the amount of light is different at the center and at the end of the imaging lens, are arranged; and characterized by second shading correction means (67 A) for performing one-dimensional shading correction for each imaging signal output from the plurality of pixel groups using a one-dimensional correction table in which correction values for correcting shading in the pupil division direction, which is a gradient direction of brightness unevenness caused by pupil division of the pupil division means (17 A, B), are arranged.