To provide a legless chair capable of automatically adjusting the head supporting angle by a pillow part at an optimum angle as operatively connected to the adjustment of the angle of erection of a backrest part to a seat part.

The lower end of a backrest frame 2 forming the frame of the backrest part A2 is connected to the rear end of a seat frame 1 forming the frame of the seat part A1 in a turnable way and as the angle can be adjusted. The lower end of a head support frame 3 forming the frame of the pillow part A3 is turnably connected to the upper end of the backrest frame 2, and the upper surface of the rear end of the seat frame 1 and the front face of the head support frame 3 are connected to each other with links 7 disposed parallel on one side of the backrest frame 2. The head support frame 3 is turned in the opposite direction from the backrest frame 2 as operatively connected with the derricking motion of the backrest frame 2.