An apparatus for transporting a button or a button fastener to a button fastening section, the button or the button fastener having a disk-like base (21, 61) and at least one protrusion (22, 62) protruding from the base (21, 61), the apparatus comprising: a transport path (122, 172) for allowing the button or the button fastener to pass through while keeping its up-and-down posture constant; a movement member (123, 173) for moving the button or the button fastener from an upstream side to a downstream side in the transport path (122, 172); and an adjustment mechanism for adjusting a circumferential orientation of the button or the button fastener which is moving through the transport path (122, 172) to a constant predetermined circumferential orientation, characterized in that the adjustment mechanism includes: a rotation providing member (133, 183) for rotating the button or the button fastener to be oriented toward the predetermined circumferential orientation by contacting the base (21, 61) of the button or the button fastener which deviates from the predetermined circumferential orientation in the circumferential direction, and a constraining member (140, 190) which is biased by an elastic member to be positioned in an initial position where the constraining member (140, 190) can constrain the protrusion (22, 62) against one side surface (121a, 171a) of the transport path (122, 172), wherein the constraining member (140, 190) is displaced from the initial position away from the one side surface (121a, 171a) of the transport path (122, 172) against the bias from the elastic member when the constraining member (140, 190) contacts the protrusion (22, 62) out of the predetermined circumferential orientation, wherein the constraining member (140, 190) has a second side surface (141b, 191b) of the transport path (122, 172). a transport path (122, 172) for allowing the button or the button fastener to pass through while keeping its up-and-down posture constant; a movement member (123, 173) for moving the button or the button fastener from an upstream side to a downstream side in the transport path (122, 172); and an adjustment mechanism for adjusting a circumferential orientation of the button or the button fastener which is moving through the transport path (122, 172) to a constant predetermined circumferential orientation, characterized in that the adjustment mechanism includes: a rotation providing member (133, 183) for rotating the button or the button fastener to be oriented toward the predetermined circumferential orientation by contacting the base (21, 61) of the button or the button fastener which deviates from the predetermined circumferential orientation in the circumferential direction, and a constraining member (140, 190) which is biased by an elastic member to be positioned in an initial position where the constraining member (140, 190) can constrain the protrusion (22, 62) against one side surface (121a, 171a) of the transport path (122, 172), wherein the constraining member (140, 190) is displaced from the initial position away from the one side surface (121a, 171a) of the transport path (122, 172) against the bias from the elastic member when the constraining member (140, 190) contacts the protrusion (22, 62) out of the predetermined circumferential orientation, wherein the constraining member (140, 190) has a second side surface (141b, 191b) of the transport path (122, 172). a rotation providing member (133, 183) for rotating the button or the button fastener to be oriented toward the predetermined circumferential orientation by contacting the base (21, 61) of the button or the button fastener which deviates from the predetermined circumferential orientation in the circumferential direction, and a constraining member (140, 190) which is biased by an elastic member to be positioned in an initial position where the constraining member (140, 190) can constrain the protrusion (22, 62) against one side surface (121a, 171a) of the transport path (122, 172), wherein the constraining member (140, 190) is displaced from the initial position away from the one side surface (121a, 171a) of the transport path (122, 172) against the bias from the elastic member when the constraining member (140, 190) contacts the protrusion (22, 62) out of the predetermined circumferential orientation, wherein the constraining member (140, 190) has a second side surface (141b, 191b) of the transport path (122, 172).