An electrical conductor aligning device that can, without mutual interference, easily, and in a short period of time, align a plurality of electrical conductors in an annular shape while overlapping in the peripheral direction. The coil element aligning device includes: holding sections, a slide mechanism and a cylinder mechanism. One leg of each coil element is held by the plurality of holding sections, the plurality of coil elements being aligned in an annular shape at a spacing such that there is no overlapping in the peripheral direction, and then the plurality of holding sections being moved inwards in the radial direction by the slide mechanism and the cylinder mechanism, thereby aligning the plurality of coil elements in an annular shape while overlapping in the peripheral direction.