There is provided a vehicle front portion structure including: a front side member including a linear portion that extends along the vehicle front and rear direction on the vehicle width direction outside of the vehicle front portion and is disposed on the vehicle front side of a dash panel, and a slanted portion that extends obliquely downward along an undersurface of the dash panel from a rear end portion of the linear portion; and a side portion weak portion disposed in a vehicle width direction outside surface or a vehicle width direction inside surface of the linear portion along a joint between the linear portion and the slanted portion.