A rotor for an electric rotary machine comprising: a pair of field iron cores fixed to a rotary shaft and having pluralities of claw-shaped magnetic poles meshing with each other with a given distance between circumferentially adjacent claw-shaped magnetic poles in a circumferential direction of the rotor, each of the claw-shaped magnetic poles having circumferentially facing side walls with outer circumferential portions formed with engaging stop portions (3c1) circumferentially protruding in flanged shapes, respectively; a field winding wound on the pair of field iron cores; a plurality of permanent magnets each disposed between sidewalls of the circumferentially adjacent claw-shaped magnetic poles and magnetized in a direction to reduce leakage of magnetic flux between the circumferentially adjacent claw-shaped magnetic poles; and a non-magnetic magnet support ring disposed on the plurality of permanent magnets on inner peripheral sides thereof; the magnet support ring including support means for supporting the permanent magnets to allow each permanent magnet to be disposed between the sidewalls of the circumferentially adjacent claw-shaped magnetic poles while permitting the magnet support ring to be disposed on the claw-shaped magnetic poles on the inner peripheral sides thereof under which the inner peripheral sides of the permanent magnets are supported with the magnet support ring so as to allow the engaging stop portions of the circumferentially adjacent claw-shaped magnetic poles to restrict each permanent magnet from moving radially outward; characterized in that the magnet support ring includes a plurality of circumferentially and equidistantly spaced magnet supporting segments for supporting the plurality of the permanent magnets, respectively, and a plurality of interconnecting segments for interconnecting the plurality of the magnet supporting segments to each other in an annular shape; and wherein each of the magnet supporting segments has an axial length, extending in line with a longitudinal direction of each permanent magnet, which is longer than a circumferential width of each of the interconnecting segments, and wherein: each of the magnet supporting segments have axial ends at least one of which has a guide portion folded radially inward. a pair of field iron cores fixed to a rotary shaft and having pluralities of claw-shaped magnetic poles meshing with each other with a given distance between circumferentially adjacent claw-shaped magnetic poles in a circumferential direction of the rotor, each of the claw-shaped magnetic poles having circumferentially facing side walls with outer circumferential portions formed with engaging stop portions (3c1) circumferentially protruding in flanged shapes, respectively; a field winding wound on the pair of field iron cores; a plurality of permanent magnets each disposed between sidewalls of the circumferentially adjacent claw-shaped magnetic poles and magnetized in a direction to reduce leakage of magnetic flux between the circumferentially adjacent claw-shaped magnetic poles; and a non-magnetic magnet support ring disposed on the plurality of permanent magnets on inner peripheral sides thereof; the magnet support ring including support means for supporting the permanent magnets to allow each permanent magnet to be disposed between the sidewalls of the circumferentially adjacent claw-shaped magnetic poles while permitting the magnet support ring to be disposed on the claw-shaped magnetic poles on the inner peripheral sides thereof under which the inner peripheral sides of the permanent magnets are supported with the magnet support ring so as to allow the engaging stop portions of the circumferentially adjacent claw-shaped magnetic poles to restrict each permanent magnet from moving radially outward; characterized in that the magnet support ring includes a plurality of circumferentially and equidistantly spaced magnet supporting segments for supporting the plurality of the permanent magnets, respectively, and a plurality of interconnecting segments for interconnecting the plurality of the magnet supporting segments to each other in an annular shape; and wherein each of the magnet supporting segments has an axial length, extending in line with a longitudinal direction of each permanent magnet, which is longer than a circumferential width of each of the interconnecting segments, and wherein: each of the magnet supporting segments have axial ends at least one of which has a guide portion folded radially inward. each of the magnet supporting segments have axial ends at least one of which has a guide portion folded radially inward.