VEHICLE SEAT

Provided is a vehicle seat configured such that a relatively smaller space is formed under a seat cushion when the seat cushion is tilted frontward. A vehicle seat comprises a rail device including lower and upper rails; a seat cushion; a seat back; and a hinge device with a rotation axis for rotatably connecting the upper rail and the seat cushion at their front parts; and a coupling device for detachably connecting the seat cushion and the upper rail at their rear parts. A seat cushion frame of the seat cushion includes side members, front and rear members, and a submarining prevention member located rearward of the front member, extending in a crosswise direction, and coupled to the side members. The rotation axis is located rearward of a central axis of the submarining prevention member.