A vehicle undercover is disclosed which avoids giving an excessive impact on an object that collides with a vehicle in a vehicle collision. The vehicle undercover includes: an installation surface to be attached to a bracket; a vertical wall surface that is bent at a front edge of the installation surface and extends downward; and a bottom wall surface that is bent at a lower edge of the vertical wall surface and extends in a front direction of the vehicle. The vehicle undercover further includes easily-deformable portions that are formed in a vehicle width direction at least at a corner portion between the installation surface and the vertical wall surface and at a corner portion between the vertical wall surface and the bottom wall surface, respectively, and that allow the respective corner portions to bend easily.