To provide a vane capable of improving sealing performance of a compression chamber formed in a pump chamber when a vane pump is operated.

The vane for the vane pump for solving the problem is a plate shape vane 30 formed on a rotor 20 of the vane pump 10 and arranged in such a manner that the same can freely move in and out a fitting insertion groove 22. The vane 30 is divided in a width direction along a line inclined by less than 90° to a projection direction of the vane 30, and projection quantity of each piece differs.