A radial inflow turbine comprising: a scroll flow passage; a turbine wheel disposed radially inward of the scroll flow passage; a plurality of variable nozzle vanes disposed on a flow passage extending from the scroll flow passage toward the turbine wheel, at a radial position between the scroll flow passage and the turbine wheel; a nozzle mount rotatably supporting each of the plurality of variable nozzle vanes in a cantilever fashion via a rotating shaft; a nozzle plate arranged to face the nozzle mount and forming the flow passage with the nozzle mount; and a swirl generating member disposed, radially outward of the plurality of variable nozzle vanes, on the nozzle plate, the swirl generating member having a height which is smaller than that of a vane height of each of the plurality of variable nozzle vanes, wherein a position of an end part of the swirl generating member on a side of the nozzle mount is farther away from the nozzle mount than a position of an end part of each of the plurality of variable nozzle vanes on the side of the nozzle mount in an axial direction, wherein the swirl generating member is having a protruding shape protruding toward the flow passage or a recessed shape retreating from the flow passage, wherein, provided that the number of the plurality of variable nozzle vanes is n, the swirl generating member is arranged in a range of ±(360°/n)/2 with reference to an intersection point between a radial position of the swirl generating member and an extended line of a chord of each of the plurality of variable nozzle vanes in a low opening state to upstream of the flow passage. a scroll flow passage; a turbine wheel disposed radially inward of the scroll flow passage; a plurality of variable nozzle vanes disposed on a flow passage extending from the scroll flow passage toward the turbine wheel, at a radial position between the scroll flow passage and the turbine wheel; a nozzle mount rotatably supporting each of the plurality of variable nozzle vanes in a cantilever fashion via a rotating shaft; a nozzle plate arranged to face the nozzle mount and forming the flow passage with the nozzle mount; and a swirl generating member disposed, radially outward of the plurality of variable nozzle vanes, on the nozzle plate, the swirl generating member having a height which is smaller than that of a vane height of each of the plurality of variable nozzle vanes, wherein a position of an end part of the swirl generating member on a side of the nozzle mount is farther away from the nozzle mount than a position of an end part of each of the plurality of variable nozzle vanes on the side of the nozzle mount in an axial direction, wherein the swirl generating member is having a protruding shape protruding toward the flow passage or a recessed shape retreating from the flow passage, wherein, provided that the number of the plurality of variable nozzle vanes is n, the swirl generating member is arranged in a range of ±(360°/n)/2 with reference to an intersection point between a radial position of the swirl generating member and an extended line of a chord of each of the plurality of variable nozzle vanes in a low opening state to upstream of the flow passage.