A current sensor of the present invention includes a mounting unit including a disposition region in which a current path is disposed, a pair of magnetic detection elements disposed in the mounting unit so as to sandwich therebetween the disposition region, and an arithmetic circuit performing an arithmetic operation on the current value of the current path on the basis of the detection values of the pair of magnetic detection elements. The pair of magnetic detection elements is disposed on sides opposite to each other with respect to a virtual line passing through the gravity center of the current path in cross-sectional view of the current path, and individually has sensitivity axes parallel to a direction perpendicular to the direction of a current conducted through the current path and the direction of the virtual line.