A seat apparatus for a vehicle, comprising: a seating surface adjustment mechanism provided with an actuator and moving a seating surface of a vehicle seat in an up-down direction by means of an actuation of the actuator; a seat position adjustment mechanism for moving the vehicle seat in a vehicle front-rear direction; a vehicle egress intention detection portion for detecting an intention of an occupant of the vehicle to get off the vehicle; and a drive control portion for performing a vehicle egress seating surface control in a case where the vehicle egress intention detection portion detects the intention of the occupant to get off the vehicle, characterized in that the seat apparatus comprises a seat position detection portion for detecting a front-rear direction position (Pw) of the vehicle seat; in that the vehicle egress seating surface control controls the seating surface adjustment mechanism so that the seating surface of the vehicle seat is positioned at a seating surface position (Pf, Pfc, Pu, Pbc, Pb) that is set to correspond to the front-rear direction position (Pw) of the vehicle seat which is detected at the seat position detection portion; and in that the drive control portion performs the vehicle egress seating surface control wherein the seating surface adjustment mechanism is drive-controlled so that the seating surface position (Pf, Pfc, Pu) of the seating surface of the vehicle seat when the vehicle seat is positioned at a first position in the vehicle front-rear direction is equal to or higher compared to the seating surface position (Pf, Pfc, Pu) of the seating surface when the vehicle seat is positioned at a second position that is positioned forward relative to the first position in the vehicle front-rear direction in a case where the vehicle seat is in a first set area that is predetermined in a front-rear movable range (Afb) of the vehicle seat. a seating surface adjustment mechanism provided with an actuator and moving a seating surface of a vehicle seat in an up-down direction by means of an actuation of the actuator; a seat position adjustment mechanism for moving the vehicle seat in a vehicle front-rear direction; a vehicle egress intention detection portion for detecting an intention of an occupant of the vehicle to get off the vehicle; and a drive control portion for performing a vehicle egress seating surface control in a case where the vehicle egress intention detection portion detects the intention of the occupant to get off the vehicle, characterized in that the seat apparatus comprises a seat position detection portion for detecting a front-rear direction position (Pw) of the vehicle seat; in that the vehicle egress seating surface control controls the seating surface adjustment mechanism so that the seating surface of the vehicle seat is positioned at a seating surface position (Pf, Pfc, Pu, Pbc, Pb) that is set to correspond to the front-rear direction position (Pw) of the vehicle seat which is detected at the seat position detection portion; and in that the drive control portion performs the vehicle egress seating surface control wherein the seating surface adjustment mechanism is drive-controlled so that the seating surface position (Pf, Pfc, Pu) of the seating surface of the vehicle seat when the vehicle seat is positioned at a first position in the vehicle front-rear direction is equal to or higher compared to the seating surface position (Pf, Pfc, Pu) of the seating surface when the vehicle seat is positioned at a second position that is positioned forward relative to the first position in the vehicle front-rear direction in a case where the vehicle seat is in a first set area that is predetermined in a front-rear movable range (Afb) of the vehicle seat.