A vehicle seat including: a tilt down mechanism configured to sink down a seat cushion in conjunction with forward tilting down movement of a seat back, wherein the tilt down mechanism couples a rear part of the seat cushion to a base on a floor by a rotary shaft, couples a front part of the seat cushion to the base via a front link, and further includes a power transmission member that couples the front link and the seat back, and wherein the tilt down mechanism is configured so that the power transmission member tilts the front link downward in conjunction with the forward tilting down movement of the seat back, thereby sinking down the front part of the seat cushion about the rotary shaft.