A vehicle seat apparatus including a seat cushion, a movement mechanism for moving the seat cushion between a seating position and a stowed position located forwardly of the seating position, a seatback, and a forward folding mechanism for moving the seatback between a rising position and a forward folded position, wherein the movement mechanism comprises: a cross member disposed on a bottom portion of the seat cushion and extending laterally of the vehicle seat apparatus; left and right support brackets (53, 54) disposed forwardly of the cross member and on a vehicle body floor; left and right side links (55, 56) having lower end portions (55a, 56a) rotatably connected to the support brackets (53, 54) through first link rotation support shafts, and upper end portions (55b, 56b) rotatably connected to the cross member through second link rotation support shafts (68, 76); a guide link comprising first guide support shafts (71a, 71 b) rotatably connected to the support brackets (53, 54) forwardly of the first link rotation support shafts, and a second guide support shaft (71 e) rotatably connected to the cross member at a position which is located, in the seating position, forwardly of the upper end portions (55b, 56b) of the side links (55, 56) and rearwardly of the first guide support shafts (71 a, 71 b), and a seat cushion locking mechanism for locking the seat cushion in the seating position, the seat cushion locking mechanism comprising a locking portion disposed on a side of the vehicle body floor, and a seat cushion striker engageable with the locking portion, characterized in that the cross member is a strip or flat plate member disposed on a center of the bottom portion of the seat cushion, wherein the side links (55, 56) and the guide link turn the seat cushion upwardly to the stowed position, and the guide link maintains a forwardly offset or spaced relationship to the left and right side links (55, 56), and that the seat cushion striker is disposed on the cross member between the second link rotation shafts (68, 76) and the second guide support shaft (71 e). a cross member disposed on a bottom portion of the seat cushion and extending laterally of the vehicle seat apparatus; left and right support brackets (53, 54) disposed forwardly of the cross member and on a vehicle body floor; left and right side links (55, 56) having lower end portions (55a, 56a) rotatably connected to the support brackets (53, 54) through first link rotation support shafts, and upper end portions (55b, 56b) rotatably connected to the cross member through second link rotation support shafts (68, 76); a guide link comprising first guide support shafts (71a, 71 b) rotatably connected to the support brackets (53, 54) forwardly of the first link rotation support shafts, and a second guide support shaft (71 e) rotatably connected to the cross member at a position which is located, in the seating position, forwardly of the upper end portions (55b, 56b) of the side links (55, 56) and rearwardly of the first guide support shafts (71 a, 71 b), and a seat cushion locking mechanism for locking the seat cushion in the seating position, the seat cushion locking mechanism comprising a locking portion disposed on a side of the vehicle body floor, and a seat cushion striker engageable with the locking portion, characterized in that the cross member is a strip or flat plate member disposed on a center of the bottom portion of the seat cushion, wherein the side links (55, 56) and the guide link turn the seat cushion upwardly to the stowed position, and the guide link maintains a forwardly offset or spaced relationship to the left and right side links (55, 56), and that the seat cushion striker is disposed on the cross member between the second link rotation shafts (68, 76) and the second guide support shaft (71 e).