To provide a vehicle seat in which the load on a seat back is applied evenly in the right-and-left direction even in the structure of having only one reclining device.

In this vehicle seat 1, a seat back 2 is joined in such a way that the adjustment of the backrest angle can be done by a reclining device 4 mounted at the center in the width direction with respect to the seat cushion 3. The reclining device 4 includes a cylindrical ratchet 10, a guide 20 assembled in the cylindrical ratchet 10 in a relatively rotatable state, and a lock mechanism assembled among these parts for stopping the rotation, wherein a connecting rod 2c bridging both side parts of seat back frames 2f is integrally connected to the outer peripheries of the cylindrical ratchet 10, and the connecting rod 3c bridging both side parts of seat cushion frames 3f is integrally connected respectively to both the parts of a guide 20.