In a vehicle seat (1), a heater element (40) disposed between the surface of a cushion pad (8) and a skin member (9) includes a pair of main body portions (45-47) and a crossing portion (48, 49) connecting the main body portions to each other, the crossing portion being received in a tuck-in groove (11) formed in the cushion pad and extending through a gap defined between a bottom portion (22) of the tuck-in groove and a tuck-in member (35). The heater element includes a substrate (41) in sheet form, and a heater wire (42) attached to the substrate, and the heater wire in the crossing portion extends in a direction orthogonal to a lengthwise direction of the tuck-in groove in a zigzag pattern, the heater wire including a bent portion (62) of the zigzag pattern located in a bottom region (68) of the tuck-in groove.