Rotor of rotary electrical machine, rotary electrical machine, and vehicle

Provided are a rotor of a rotary electrical machine, a rotary electrical machine, and a vehicle, which enable mitigation of stress concentration generated in a magnet insertion hole of a rotor core and high-speed rotation. A rotor 250 of a rotary electrical machine includes: a rotor core 252 including a plurality of magnet insertion holes 253 for each magnetic pole; and permanent magnets 254 inserted into the magnet insertion holes, in which a bridge portion 260, which mechanically connects a rotor core portion 256 on the outer circumferential side of the magnet insertion holes 253 and a rotor core portion 263 on the inner circumferential side of the magnet insertion holes 253, is provided between the adjacent magnet insertion holes, and the bridge portion 260 has two inflection points 266a and 266b on the outer circumferential side of the bridge portion 260.