Vehicle seat

When a vehicle is rear-ended and a seated user moves rearward in reaction to the rear-end collision, a load generated by a rearward movement of a lumbar portion of the seated user is transmitted from a pressure plate (10A) of operating force generating means (10) to an operating force generating mechanism (10B). Then, a pressure roller of the operating force generating mechanism (10B) deflects and pulls inner cables of pulling cable devices (11, 11), thereby moving both end portions of a headrest frame (7) upward. As a result, the headrest frame (7) is moved upward along with headrest supporting brackets (7C, 7C) smoothly and reliably, whereby a headrest (4) attached to the headrest supporting brackets (7C, 7C) with headrest stays (4A, 4A) arranged between the headrest (4) and the respective headrest supporting brackets (7C, 7C) is moved in the upward-forward direction, that is, toward the head of the seated user smoothly and reliably.