The invention relates to a rotor of an exhaust gas turbocharger, which has a rotor hub and rotor vanes arranged on said rotor hub. The rotor vanes have a vane thickness distribution selected such that these rotor vanes have along their extent from the fluid leading edge (4) to the fluid trailing edge (5) at least one transition between a stiffness-oriented vane thickness distribution and an inertia and stress-oriented vane thickness distribution over the height of the vane.
