An axial air gap rotating electric machine comprising: a circular ring-shaped stator formed by a plurality of stator cores arranged about a rotational axis direction in a ring shape, the stator cores each comprising an iron core, a tubular bobbin and a coil, the iron core having a columnar body whose side surface has a substantially trape-zoidal shape, the tubular bobbin having the iron core inserted into a bobbin inner tubular portion substantially matching an outer peripheral shape of the iron core, the coil being wound around an outer tubular portion of the bobbin; at least one rotor plane-opposing to the side surface with a predetermined air gap interposed therebetween in a radial direction of a rotating shaft; a substantially tubular shaped housing having an inner circumferential surface which supports the stator; and a plate-like first conductive member having a horizontal portion extending from one opening portion of the bobbin inner tubular portion on an inner peripheral surface of the bobbin inner tubular portion in parallel with the rotating shaft and a vertical portion bent in a direction perpendicular to an extending direction of the horizontal portion and contacting an end surface of the opening portion, wherein the horizontal portion contacts a part of an outer peripheral surface of the iron core and a part of the inner peripheral surface of the bobbin inner tubular portion, characterised in that the axial air gap rotating electric machine comprises a bracket which rotatably supports the rotating shaft connected with the housing and with the rotor through a bearing, the end surface of the opening portion of the bobbin has a protrusion portion, the vertical portion has a hole for inserting the protrusion portion, and the housing is made of an electrically conductive material and the vertical portion is electrically connected to an inner circumferential surface of the housing, so that the housing and the iron core have ground potential. a circular ring-shaped stator formed by a plurality of stator cores arranged about a rotational axis direction in a ring shape, the stator cores each comprising an iron core, a tubular bobbin and a coil, the iron core having a columnar body whose side surface has a substantially trape-zoidal shape, the tubular bobbin having the iron core inserted into a bobbin inner tubular portion substantially matching an outer peripheral shape of the iron core, the coil being wound around an outer tubular portion of the bobbin; at least one rotor plane-opposing to the side surface with a predetermined air gap interposed therebetween in a radial direction of a rotating shaft; a substantially tubular shaped housing having an inner circumferential surface which supports the stator; and a plate-like first conductive member having a horizontal portion extending from one opening portion of the bobbin inner tubular portion on an inner peripheral surface of the bobbin inner tubular portion in parallel with the rotating shaft and a vertical portion bent in a direction perpendicular to an extending direction of the horizontal portion and contacting an end surface of the opening portion, wherein the horizontal portion contacts a part of an outer peripheral surface of the iron core and a part of the inner peripheral surface of the bobbin inner tubular portion, characterised in that the axial air gap rotating electric machine comprises a bracket which rotatably supports the rotating shaft connected with the housing and with the rotor through a bearing, the end surface of the opening portion of the bobbin has a protrusion portion, the vertical portion has a hole for inserting the protrusion portion, and the housing is made of an electrically conductive material and the vertical portion is electrically connected to an inner circumferential surface of the housing, so that the housing and the iron core have ground potential.