A wheelchair (20) includes a first seat portion (22) and a second armrest (24) rotatably fixed to a first support portion (22b) of the first seat portion (22), a first rotation axis (27) of this second armrest (24) is arranged on an imaginary plane (28) perpendicular to a back bottom support surface (22a) and parallel to the front and rear direction of the first seat portion (22) so as to make a predetermined angle with respect to the back bottom support surface (22a).
