A reinforcement for a vehicle pillar, for example, the B pillar of a vehicle is provided. The reinforcement includes a reinforcing structure and a stiffening structure. The reinforcing structure is configured with an upper end region for connection to the vehicle roof and with a lower end region for connection to the underfloor and/or a sill structure of the vehicle. The stiffening structure is connected to the reinforcing structure in order to stiffen the reinforcing structure against a side impact of the vehicle. The reinforcing structure has at least one material section which projects with respect to the stiffening structure, which serves to connect the reinforcing structure to the outer skin and/or the inner skin of the vehicle pillar. The reinforcing structure comprises a weldable non-boron steel and the stiffening structure comprises a hardened boron steel. A vehicle pillar having such a reinforcement is also provided.