A radius end mill, comprising a cutting edge portion disposed on a distal end portion of a tool body , the cutting edge portion including: a plurality of end cutting edges arrayed around a central axis (O); a plurality of arc-shaped radius end cutting edges continuous with the end cutting edges on an outer peripheral side in a radial direction; and a plurality of peripheral cutting edges continuous with the radius end cutting edges on an outer peripheral side in a radial direction, the peripheral cutting edges being disposed to extend to a rear end portion side of the tool body along cutting edge grooves , wherein: each of the plurality of end cutting edges is divided into an inner peripheral side end cutting edge and an outer peripheral side end cutting edge in a radial direction, each of the plurality of radius end cutting edges has a shape such that, for each of the plurality of radius end cutting edges, a lowest point (Pb) of the radius end cutting edge during cutting with the tool body is positioned in a section from a boundary (P2) between the outer peripheral side end cutting edge and the radius end cutting edge to a boundary (P4) between the radius end cutting edge and the peripheral cutting edge, and respective second surfaces of all the plurality of inner peripheral side end cutting edges are coupled to one another at a part close to the central axis (O), such that the second surfaces of all the inner peripheral side end cutting edges are respective portions of a continuous surface that includes a region which, in a view of the distal end surface of the tool body, includes the central axis (O), the continuous surface extending radially from the region to an outer peripheral side of each of the inner peripheral side end cutting edges in a strip shape, a width of the strip-shaped region gradually enlarging from the central axis side to an outer peripheral side in a radial direction, characterised in that the end portion of each inner peripheral side end cutting edge close to the central axis (O) intersects radially outwards of the central axis a boundary line between the second surface of the inner peripheral side end cutting edge on its front side in rotation direction and a gash wall surface formed on the rear side thereof. each of the plurality of end cutting edges is divided into an inner peripheral side end cutting edge and an outer peripheral side end cutting edge in a radial direction, each of the plurality of radius end cutting edges has a shape such that, for each of the plurality of radius end cutting edges, a lowest point (Pb) of the radius end cutting edge during cutting with the tool body is positioned in a section from a boundary (P2) between the outer peripheral side end cutting edge and the radius end cutting edge to a boundary (P4) between the radius end cutting edge and the peripheral cutting edge, and respective second surfaces of all the plurality of inner peripheral side end cutting edges are coupled to one another at a part close to the central axis (O), such that the second surfaces of all the inner peripheral side end cutting edges are respective portions of a continuous surface that includes a region which, in a view of the distal end surface of the tool body, includes the central axis (O), the continuous surface extending radially from the region to an outer peripheral side of each of the inner peripheral side end cutting edges in a strip shape, a width of the strip-shaped region gradually enlarging from the central axis side to an outer peripheral side in a radial direction, characterised in that the end portion of each inner peripheral side end cutting edge close to the central axis (O) intersects radially outwards of the central axis a boundary line between the second surface of the inner peripheral side end cutting edge on its front side in rotation direction and a gash wall surface formed on the rear side thereof. <EOS>